noun, takes genitive case の, noun used as a suffix

Colloquialism.
  1. being a fan of, being a supporter of, pushing for.

noun

Slang.
  1. one's favorite (member of an idol group, character in an anime, player in a team, etc.).

Variations

Pronunciation Kanji Kana Is Common
 
推し おし

Contained Kanji Breakdown

conjecture, infer, guess
スイ お.す (6th, N1)
hand, hand radical (no. 64)
シュ
bird, old bird radical (no. 172)
サイ スイ とり (Kentei 1)
human radical (no. 9)
lord, chief, master
シュ あるじ ぬし (3rd, N4)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)
king, rule, magnate
オウ -ノウ おお (1st, N3)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)