sa'ei zei gerna zei-lujvo

x1 is the grammar of language x2 applied to onomatopoetic text x3

On affix form:

gerna
x1 is the grammar/rules/defining form of language x2 for structure/text x3.

In definition:

cmapagjvo
x1 (text) is a lujvo with meaning x2 and arguments x3, and which is constructed from tanru/veljvo x4 such that each element of the veljvo is ultimately only a cmavo (including "{zei}", "{ke}"/"{ke'e}", "{bo}", etc.), gismu, or rafsi of such cmavo or gismu.
luvrzei
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
zeiljvo
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
zejvo
x1 (text) is a Lojban compound predicate using the particle “zei”; with meaning x2, arguments x3, built from metaphor (tanru) x4.
zo si si zei fa'o
x1 is a nonsense zei-lujvo using parts x2, silly by standard x3.

In notes:

ci'o'ei (exp!)
Convert arbitrary bridi to UI with the grammar of {sei}.
ci'oi (exp!)
Converts following cmevla or zoi-quote into psychomime.
isku
x1 is a sound represented by onomatopoeia x2 (text) according to x3 (experiencer)
ki'ai (exp!)
Converts following selbri, cmevla, or zoi-quote into a nonce interjection/attitudinal.
mi'au (exp!)
attitudinal: meow, miaow
sa'ei zei valsi
x1 is an onomatopoeia, a word that sounds like what it represents
snafu'ivla
x1 is an onomatopoeic word meaning x2 in language x3, based on sound x4 emitted by x5
tai'i (exp!)
Converts following cmevla or zoi-quote into phenomime.