()まる

そまる
verb (godan)
to be dyed; to be stained; to be tainted
1. to be dyed; to be colored
For something to take on color from dye or its surroundings.
(やま)紅葉(こうよう)(あか)()まった。
The mountains were dyed red with autumn leaves.
(そら)夕焼(ゆうや)(いろ)()まっている。
The sky is tinged with the colors of sunset.
(しろ)(ぬの)(あか)()まった。
The white cloth was dyed red.
2. to be tainted; to be influenced
To be negatively influenced by an environment or bad company.
(わる)習慣(しゅうかん)()まってしまった。
He became tainted by bad habits.
都会(とかい)生活(せいかつ)()まって田舎(いなか)(もど)れなくなった。
Having been influenced by city life, I can no longer go back to the countryside.
(かれ)はすっかり(あく)()まってしまった。
He has been completely corrupted by evil.

()まる is an intransitive verb (自動詞(じどうし)) meaning to be dyed or influenced.

TRANSITIVE PAIR: ()める (to dye)

  • ()まる: The cloth is dyed.
  • ()める: I dye the cloth.

ASPECT (ている):
()まっている indicates something has been dyed/tainted and remains so.

PARTICLE PATTERNS:

  • [thing]が[color]に()まる — [thing] is dyed [color]
  • [person]が[influence]に()まる — [person] is tainted by [influence]

COMMON PATTERNS:

  • (あか)()まる (be dyed red)
  • ()()まる (be stained with blood)
  • 都会(とかい)()まる (be corrupted by city life)
  • (あく)()まる (be tainted by evil)

FIGURATIVE USE:
The "tainted by bad influence" meaning is common, implying someone has become corrupted or changed negatively by their environment.