noun which may take the genitive case particle 'no', na-adjective, noun
a long time (since the last time); first in a long time
Used as a noun or adjectival noun to describe something happening after a long interval. Often appears in phrases like 久しぶりに or 久しぶりの.
久しぶりに映画を見た。
I watched a movie for the first time in a long time.
久しぶりの雨で庭が潤った。
The garden was refreshed by the first rain in a long time.
expression
it's been a long time; long time no see
A set greeting expression used when meeting someone after a long absence. Often preceded by お for politeness (お久しぶりです).
See also: お久しぶり
久しぶり！元気だった？
Long time no see! How have you been?
お久しぶりです。お変わりありませんか。
It's been a long time. Have you been well?