How many letters does the top answer for “of very poor quality; flimsy” have?

The most common answer is bum (3 letters).

Crossword clue: of very poor quality; flimsy

4 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

bum 3 letters wn-def

a person who is deemed to be despicable or contemptible

cheesy 6 letters wn-def

of very poor quality; flimsy

crummy 6 letters wn-def

of very poor quality; flimsy

punk 4 letters wn-def

an aggressive and violent young criminal

(british informal) very poor in quality 50% similar → ropey, ropy