"Kasi" is a word in TAGALOG, HILIGAYNON, CEBUANO

kási - To bet, lay, lay a wager, put one’s
money on, wager, stake. See kasá id. Kasíhi
siá sing pilô. Bet him double the amount.
Pilá ang ikási mo? How much is (was) your
wager? (cf. patád, tayâ).

kási - (Sp. casi) Nearly, about, somewhat
more or less, almost. (cf. bílang, daw).

kási v [AC; ac] make or take on a bet, make it a bet, bet with each other.
Nagkási sila.
Siya didtu kang Markus ug ang usa kang Sirhing, They made a bet.
He was for Marcos and the other one was for Serging.
Kasíhi siya, ambi mukasar ba, Bet him.
Lets see if he takes it.
Ikási ang ákung kwarta sa manuk níya, Bet my money on his cock.
n bet made.

kasi
Definition: (conj) because

kási almost all, nearly all.
Kási sa mga istudiyanti nakabayad, Nearly all of the students have paid.
Kási sa (ang) mga nagpuyù dinhi dátù, Almost everyone who lives here is rich.
kasikási = kási.