不足掛齒

not worth mentioning (idiom)

no; not so / (bound form) not; un-

insufficient / lacking / deficiency / not enough / inadequate / not worth / cannot / should not

excessive

foot / to be sufficient / ample

to hang or suspend (from a hook etc) / to hang up (the phone) / (of a line) to be dead / to be worried or concerned / to make a phone call (dialect) / to register or record / classifier for sets or clusters of objects / (slang) to kill / to die / to be finished / to fail (an exam)

to mention (e.g. "don't mention it")

tooth / CL:顆|颗[ke1]