くだらない (translations)→ awful bad bosh dumb flippin frivolous frothy pointless racket ridiculous silly slushy trivial vulgar weedy
けちな (translations)→ chintzy frugal measly partly small-time
ケチな (translations)→ churlish modestly motherfuckin’ parsimonious
パッとしない (translations)→ depressing mediocre
貧弱な (translations)→ inferior insubstantial jerry lousy low scant small unlovely