On gloss:

tolvlina in sense "logical operation"
v1 is a joint denial (nor/Peirce's arrow ↓), stating that neither v2 (du'u) nor v3 (du'u) are true.

On affix form:

no'e
midpoint scalar negator: neutral point between je'a and to'e; "not really".

In definition:

nalnimjavnau
x1 is a human who is neither a woman nor a man.
narnonsmikemnonsmipi'i
x1 is a zero-divisor partnered with element(s) x2 in structure/ring x3, where neither x1 nor x2 is the zero(-like) element in x3
norcpa
c1 neither gets c2 from c3 nor puts c2 at c3
normle
m1 is plain/ordinary-looking (neither ugly nor beautiful) to m2 in aspect m3 (ka) by aesthetic standard m4.
nortaske
t1 is neither quenched from nor thirsty for drink/fluid/lubricant t2.
norxagji
xa1 is neither sated from nor hungry for food/fuel xa1.
digno
x1 is aligned diagonally along/between nonadjacent vertices x2 as in polytope x3; x1 is a diagonal line segment/linear manifold of lower dimension as viewed in frame of reference x3; x1 is crooked (one sense), skew (one sense, see notes), off-kilter (one sense), away from center/off-center, non-orthogonal/not perpendicular nor parallel, at an angle, perhaps non-vertical and non-horizontal, diagonal to x2 in figure/coordinate system x3.
tcuti
x1 is a sibling of a direct ancestor/elder of x2 by bond/tie/relation/standard x3 (not necessarily genetic/biological nor necessarily directly ancestral); x1 is an associated member of one of x2's ancestor's generation; x1 is an (great-(great-(...)))uncle/aunt of x2.
no'e'u (exp!)
digit/number: liminal zero; neither positive nor negative
ui'i (exp!)
Attitudinal: feel like laughing - neither laughing nor crying - feel like crying
ui'o (exp!)
cheering/clapping/congratulating/adulation/bravo/praise - neither favorable nor unfavorable judgment - booing/hissing/jeering/disfavor
abvele
x1 is a grandparent of x2 by bond/tie/relation/standard x3 (not necessarily genetic/biological nor necessarily directly ancestral); x1 is an associated member of x2's parent(s)'s parent(s)'s generation.
aigne
x1 is an eigenvalue (or zero) of linear transformation/square matrix x2, associated with/'owning' all vectors in generalized eigenspace x3 (implies neither nondegeneracy nor degeneracy; default includes the zero vector) with 'eigenspace-generalization' power/exponent x4 (typically and probably by cultural default will be 1), with algebraic multiplicity (of eigenvalue) x5
dunlixu
Either both x1 and x2, or neither x1 nor x2, satisfy predicate x3

In notes:

bancu
x1 exceeds/is beyond limit/boundary x2 from x3 in property/amount x4 (ka/ni).
ci'inoroi (comp!)
tense interval modifier: countably infinitely many times; objectively quantified tense; defaults as time tense.
cabnunzukykezyzga
x1 watches the event x2 unfold before their very eyes/live/red-handed/in flagrante (delicto), using senses/means x3.
favytcinymupli
m1 is an example/instance of developmental/evolutionary stage/state m2=t1 of developing thing t2=f1 in its development towards/into f2 from f3 through stages f4=m3.
gimkamsmikezypro
x1 (word/quote; probably gismu) conflicts with x2 (word/text; probably gismu) according to rules x3 in language x4.
gimpro
x1 (word/quote; probably gismu) conflicts with x2 (word/text; probably gismu) according to rules x3 in language x4.
grekla
x1=p1=k1 passes through portal/generically exits or enters via portal (entrance/exit) x2=p2 to destination side x3=p3=k2 from origin side x4=p4=k3 via route x5=k4 using means/vehicle x6=k5.
jorny'utka
x1 is joined/connected to/with something which is joined/connected to/with something which ... which is joined/connected to/with something which is joined/connected to/with x2 via intermediate things/steps x3 (ce'o), with respective points/loci of (con)juncture x4 (ce'o).
ridnormro
x1 is undead/a living-dead of type/mythology x2
rirspe
x1 is the step-parent/step-mother/step-father of x2 due to marriage with their parent according to law/custom x3.
rokybixygau
x1 =g1 (agent) petrifies/turns/'freezes'/fossilizes x2=b1 into rock/fossil/statue x3=r1=b2 (result) of rock composition x4=r2 and at/from location x5=r3 under conditions x6=b3.
samselkei
x1 is a video game / computer game.
sizyzilmro
x1 is death/the idea of death according to x2
vlakamsmi
x1 is the similarity relation between all members of set x2 (set of quoted words) such that they all mean esentially one common thing x3 and are considered to be identical in any meaningful way in language x4.
zifyvlaklerafsi
x1 (quote) is a zi'evla/fu'ivla categorizer particle/morpheme/unit with meaning/indicating category x2, having properties x3, and that is appended in zi'evla (full word) x4, in language x5
zilziljbo
x0: Lojban is love, Lojban is life. (nullary predicate)
crami
x1 is a mythological/fantastic creature [mythical organism] of mythos/religion/story/culture x2.
jensi
x1 is a (set/pair) of scissors/shears/clippers/(hedge) trimmers/tongs [tool] with parts/blades x2 (scissor) and used for purpose x3
nalti
x1 is a logical 'NOT' statement resulting from the (multiplicative) negation of/applying the 'NOT' operator to x2 (du'u); x1 is the logical negation/negative of x2.
preri
x1 is a non-binary parent of x2 [not necessarily biological].
sengi
x1 is an elephant shrew/jumping shrew/sengi (member of Afrotherian mammal order: Macroscelidea) of subtaxon/type/genus/species/variety/breed x2
tifri
x1 is the audience/enjoying or partaking party of work/performance/program/entertainment/transmission/experience/story/presentation/act x2 (concrete or abstract), via means/mode/expressed in format/using senses x3; x1 watches/listens/reads/experiences x2.
co'ai'e (exp!)
Non-committal/agnostic/unassertive/abstaining/neutral tanru inversion.
co'au'a (exp!)
interval event contour: at the restarting/renewal point of...
di'au (exp!)
pro-sumti and sumyzmico: discourse-interior default it (terbri-specific)
joi'au'a (exp!)
non-logical connective: to be in a (nontrivial) superposition of (states); mixture
lo'o'o (exp!)
plural logic maximum-scope descriptor: those who individually or collectively are ...
lu'ei (exp!)
convert a grammatical quotation to a tanru unit; x1 expresses/says the quoted text for audience x2 via expressive medium x3.
mai'u'au (exp!)
unary mekso operator: parity of function; if the input is a unary real-valued function X1 which is defined on a subset of the reals, then the output is 1 is X1 is even, -1 if X1 is odd, and 0 otherwise.
na'ai (exp!)
Same function as {na} but with the additional meaning that the sumti in the bridi have no prior experience together.
rai'i (exp!)
mekso (2 or 3)-ary operator: maximum/minimum/extreme element; ordered list of extreme elements of the set underlying ordered set/structure X1 in direction X2 of list length X3 (default: 1)
faukne
x1 is a mathematical object for/to which operator x2 is defined/may be applied when under conditions x3 under definition (of operator)/standard/type x4
frasuje
x1 reflects/relates to/pertains to Gothic (French-originating, High or Late Medieval, post-Romanesque pre-Renaissance) style/aesthetic/art/architecture/practice in aspect x2
karbina
x1 and x2 are elements of the same partially-ordered set x3 (see notes) such that x1 and x2 cannot be meaningfully compared via said relation/in said property.
pletomino
x1 is a polyform/polyplet/polyomino/polyabolo/polyiamond (etc.) composed of parts/'tile' polytope x2 arranged in (finite) unified shape/pattern x3 in ambient space x4 and subject to rules/restrictions/conditions x5
skaipe
x1 contacts x2 by video-telephone/video-chat/teleconference service (product) x3 provided by (company/producer/provider) x4
utka
x1 and x2 are path-linked by binary predicate x3 (ka) via intermediate steps x4 (ce'o; (ordered) list).
utkakpu
x1 and x2 are path-connected by ordered binary relation/predicate x3 (ka), such that all paths which satisfy condition(s) x4 (ka; default: no additional conditions) in the relevant graph (x5) linking nodes by said relation x3 in a directed manner and which contain x1 must also (later in the path) contain x2.
utkaro
x1 and x2 are path-linked by directed binary predicate x3 (ka) via intermediate steps x4 (ordered list; ce'o), such that no other node exists in the graph (x5) to which x2 is connected in the same way/direction as x1 is (possibly-indirectly) connected to x2 via x3 (id est: as being such that x2 is the first argument of the x3 and the hypothetical other node is the second argument thereof).
utkazo
x1 and x2 are path-linked by binary predicate x3 (ka) via intermediate steps x4 (ce'o; (ordered) list but not necessarily fully and explicitly specified without skipping/gaps/omissions/implicit terms).
vensraitu
x1 is Spring time/vernal [warming season] in the northern hemisphere and Autumn/autumnal [cooling season] in the southern hemisphere of year x2 and for celestial body x3.
ka'o zei namcu
x1 is a complex number (understood as such).
xipfne
x1 emits light characteristic of/is of the color that is described by/(as) arising from/associated with the approximately twenty-one centimeter wavelength, hydrogen hyperfine proton/electron spin-flip transition (from parallel to antiparallel configuration, id est: from the higher energy state to the lower energy state), electromagnetic radiation