basti -bas- gismu

x1 replaces/substitutes for/instead of x2 in circumstance x3; x1 is a replacement/substitute.

See also cmavo list ba'i, binra.

In definition:

ba'i
basti modal, 1st place replaced by ...
seba'i (comp!)
basti modal, 2nd place instead of ...

In notes:

binra
x1 insures/indemnifies x2 (person) against peril x3 (event) providing benefit(s) x4 (event).
basxarfri
x1 vicariously experiences x2 (ka/nu/li'i), imagining themself in place of x3
basysi'u
x1 (plurality/set) replace/trade places with one another in circumstance x2.
krebasti
b1 is wig/toupee/mirkin worn by k2 on body location k3.
selbasti
x2=b1 replaces/substitutes for/instead of x1=b2 in circumstance x3=b3; x2=b1 is a replacement/substitute.
simbasti
x1 trades places with x2 in circumstance x3.
terbasti
x3=b1 replaces/substitutes for/instead of x2=b2 in circumstance x1=b3; x3=b1 is a replacement/substitute.
trubasti
b1 takes power from t1 over people/territory/domain/subjects t2 in circumstance b3.
xadypaurbasti
x1=b1 a prosthesis of x2=b2=p1 in circumstance x3=b3
batxapa
x1 is a body part of x2 that x2 can leave behind and regenerate
rergexo
x1 is a regular expression / regex with match string x2 and replacement string x3 (default: zi'o) governed by rules x4
spunera
x1 (text) is a spoonerism or original text x2 (text)