形容詞 worthless:

1. lacking in usefulness or value
2. morally reprehensible
   同義詞：despicable, ugly, vile, slimy, unworthy, wretched

1. Such advice as (ie The little advice that) he was given proved almost worthless.
   給他提的那類建議簡直毫無價值。
2. Something loathsome, despicable, or worthless.
   污垢，渣滓，可鄙者令人厭惡、可鄙或無用的事物
3. One of the surprise things of this world is the respect a worthless man have for himself.
   這世上令人驚奇的事情之一，是毫無價值的人之自尊的心情。
4. She was worthless as a violinist.
   她作為小提琴手一無所成。
5. I feel that such gatherings are worthless.
   我認為這樣的集會毫無價值。

worth.less

adj.（形容詞）
Lacking worth; of no use or value.
無價值的：不值得的；無用的或無價值的
Low; despicable.
卑鄙的：缺乏道德品質的，卑鄙的

【引伸】
worth.lessly
adv.（副詞）
worth.lessness
n.（名詞）