یکم

Etymology
From.

Adjective

 * 1) (in compounds) first
 * 2)  first
 * 1)  first

Usage notes
is the standard word for "first" in modern Persian. Compound numbers, however, are always formed with.

Etymology
.

Noun
(indeclinable)


 * 1) first day of the month

Adjective

 * 1) first