entries → 划不來
TSUMUGU · TOCFL C1 (est.) · 詞
划不來 word · TOCFL C1 (est.)
划不來 ＝ 划 ＋ 不 ＋ 來
ㄏㄨㄚˊ ㄅㄨˋ ㄌㄞˊ · huábùlái
phrase — not worth it, a bad deal (the cost outweighs the gain)

字源 FORM — what the parts do

划to pay off, be worth it (划算)huá
不not (不)bù
來to come out (potential ending)lái划…來 = come out ahead; 不 in the middle negates it
划不來，划算的划，不要的不，來去的來。
關 · Related
划得來huádeláithe affirmative twin — worth it (得 swapped for 不)不值得bùzhídéthe plain synonym — not worth it