simsa -smi- gismu

x₁ is similar/parallel to x₂ in property/quantity x₃ (ka/ni); x₁ looks/appears like x₂.

Also: x₁ is a likeness/image of x₂; x₁ and x₂ are alike; similarity and parallel differ primarily in emphasis. See also dunli, frica, mintu, panra, simlu, vrici.

jbovlaste

In notes:

dunli: x₁ is equal/congruent to/as much as x₂ in property/dimension/quantity x₃.
frica: x₁ differs/is distinct from/contrasts with/is unlike x₂ in property/dimension/quantity x₃.
mintu: x₁ is the same/identical thing as x₂ by standard x₃; (x₁ and x₂ interchangeable).
panra: x₁ parallels x₂ differing only in property x₃ (ka; jo'u/fa'u term) by standard/geometry x₄.
simlu: x₁ seems/appears to have property(ies) x₂ to observer x₃ under conditions x₄.
vrici: x₁ (set/mass/ind.) is miscellaneous/various/assorted in property x₂ (ka).
si'a: discursive: similarly.
brisnismi: x₁ is a subsentence of Lojban grammar.
caltaismi: x₁ is shaped (physically/geometrically) like x₂, with shape x₃
jbobausmi: s₁ is similar/parallel to Lojban in property s₃ (ka).
remsmimi'i: m₁=r₁=s₁ is an automaton [mostly unintelligent android/humanoid machine] for purpose m₂.
skasmi: x₁ resembles x₂ in color x₃
smisi'u: The members of x₁=simx₁ (set) resemble one another in property x₂=simx₂.
smitra: x₁=t₁=s₁ acts like/similarly to x₂=t₂=s₂ in property x₃=s₃ under conditions x₄=t₃.
xarpresmitra: x₁=t₁=s₁ acts like/pretends to be fictional/imaginary character x₂=t₂=s₂=xa₁=p₁ imaginary to x₃=xa₂, in property/way x₄=s₃ under conditions x₅=t₃.
kavzi: x₁ is "quasi" in property (ka) x₂; x₁ is "similar but not quite"/analogical to/comparable to having property x₂; x₁ is a quasi-x₂.
modju: x₁ (li; number) is congruent to x₂ (li; number; see description for canonical/traditional/contextless default usage) modulo x₃ (li; number); \frac(x_{1 - x} is an integer.
ronsa: x₁ is redundant/unnecessary with x₂ because the both satisfy property x₃ (ka) under conditions / because of reason x₄ (nu/du'u)
kai'i (exp!): Property relativizing determiner / unary quantifier constructor. {kai'i} introduces a predicate whose first argument slot becomes filled by the property made by taking the bridi in which this {kai'i} appears and putting {ce'u} into the argument slot in which this {kai'i} argument was located. Put formally, "kai'i brodi cu brodu" = "lo ka ce'u brodu cu brodi". Additionally, a {kai'i} term has a rightward logical scope, like quantifiers and adverbials.
si'ai (exp!): marks a construct as being a reference/allusion - explicit marker of divorce/isolation of a construct from any external allusions that may come to mind
lojban zei simsa: s₁ is similar/parallel to Lojban in property s₃ (ka).