Without further information, I can't answer this question accurately. Without seeing the kanji of the specific word you're looking for, I can only guess; 'sai' has multiple potential meanings. Among them are: debt, circumstances, gap, and rhinoceros.
'Desu' is what is called, in grammar, a "copula." That is, it links a subject and predicate together, but is frequently translated as a verb of existence: 'to be.'
juukyuu sai desu
watashi WA ju san sai desu.
It's a small dick.
Desu or Des is the Japanese verb 'to be'
In Japanese this would be 'watashi wa juu ni sai desu.' (私は12歳です)
this makes no sense
ï¼’ï¼‘æ‰ (nijuuissai) means '21 years old' in Japanese. 二åä¸€æ‰ may also be used.'I am 21 years old' is simply21æ‰ã§ã™ (nijuuissai desu).
If you mean DESU , it means the verb "to be" in japonese ~
I am pretty. atashi - I wa...desu - am kirei - pretty
it means is/are it is a conjugate for des or desu.
That was very skillful!
Desu. It is put at the end of a sentence. It can also mean 'it is'.