not deserving of or needing one's time, attention, or energy; unworthy of

Something so insignificant or trivial that it is not worth bringing up or talking about.

not worth a cent; utterly worthless; no use whatsoever

not worth a penny; utterly worthless; describes someone or something of no value at all

(idiom) used of an argument or statement that is so weak or flawed it is not even worthy of a rebuttal

not worth a single penny; completely worthless; of no value whatsoever

of no value or significance; extremely ridiculous or absurd

to be worth less than a cent; completely without value; worthless

not worth the time, effort, or cost; not worthwhile

of little value; not worth much; cheap or lowly

a famous poem by Song Dynasty poet Ye Shaowong, describing a visitor finding a garden gate locked but seeing a blooming apricot branch over the wall