run to seed
to stop taking care of your appearance so that you no longer look attractive

[TahlilGaran] Dictionary of Contemporary English ▲

run to seed
go/run to seed
to stop taking care of your appearance so that you no longer look attractive.
I almost didn't recognize John. He's really gone to seed since his wife left him.

[TahlilGaran] English Idioms Dictionary ▲

run to seed
• run/go to seed
to become worn-out and uncared for
The small store has run to seed and few people like to go there now.

[TahlilGaran] English Idioms Dictionary ▲

run to seed
See: GO TO SEED.
{v. phr.}
1. To grow seeds.
Onions go to seed in hot weather.

2. To lose skill or strength; stop being good or useful.
Sometimes a good athlete runs to seed when he gets too old for sports.

Mr. Allen was a good carpenter until he became rich and went to seed.

[TahlilGaran] English Idioms Dictionary ▲