mintu -mit mi'u- gismu

x1 is the same/identical thing as x2 by standard x3; (x1 and x2 interchangeable).

(cf. panra, satci, mapti, simsa, drata, dunli, cmavo list du - which has no standard place, simxu)

In notes:

drata
x1 isn't the-same-thing-as/is different-from/other-than x2 by standard x3; x1 is something else.
dunli
x1 is equal/congruent to/as much as x2 in property/dimension/quantity x3.
jvomi'u
The lujvo m1=l1 (text) is an equivalent/interchangable lujvo form of lujvo m2=l1 (text).
kamcedu
x1 (ka) is the property/state of being x2
lanzu
x1 (mass) is a family with members including x2 bonded/tied/joined according to standard x3.
lazmi'u
x1 is a family relative of x2
mapti
x1 fits/matches/suits/is compatible/appropriate/corresponds to/with x2 in property/aspect x3.
mitmo'a
mo1=mi1 follows the same pattern as mi2 with respect to forms/events mo2 arranged according to structure mo3.
mitsmuvla
v1=m1 is a synonym of m2 by standard m3 in language v3.
mitsmuvlaste
x1 is a thesaurus with words x2 in order x3, medium x4 and language x5
mitsnavla
x1 is a homophone to x2, and means x3 in language x4
mitybe'isi'u
s1 (set) mutually synchronize b2 via transmission means/medium b5
mitysisku
x1 seeks/searches/looks for something that has the same identity as x2 among x3
mi'u
discursive: ditto.
mlumitu
x1 and x2 are indistinguishable from each other, they seem to share all their properties except maybe their location and identity, as perceived by observer x3
modju
x1 (li; number) is congruent to x2 (li; number; see description for canonical/traditional/contextless default usage) modulo x3 (li; number); \frac(x1 - x is an integer.
panra
x1 parallels x2 differing only in property x3 (ka; jo'u/fa'u term) by standard/geometry x4.
satci
x1 [measurement/match] is exact/precise to precision x2 in property/quantity x3 (ka/ni).
simsa
x1 is similar/parallel to x2 in property/quantity x3 (ka/ni); x1 looks/appears like x2.
simxu
x1 (set) has members who mutually/reciprocally x2 (event [x1 should be reflexive in 1+ sumti]).
smisi'u
The members of x1=simx1 (set) resemble one another in property x2=simx2.