形容詞 cogent:

1. powerfully persuasive
   同義詞：telling, weighty

1. A brief, apt, and cogent expression.
   簡潔的語句，警句簡潔貼切且令人信服的表達
2. The lawyer's cogent arguments convince the jury.
   這位律師強有力的爭辯博得陪審團之信服。
3. Maybe the most cogent comment on a topic which so far has generated more heat than light came from Mr Carter.
   也許，對目前已經引起爭論的議題最有說服力的評論是由卡特先生所作的。

co.gent

adj.（形容詞）
Appealing to the intellect or powers of reasoning; convincing:
有說服力的：用推理的才智和能力的；使人信服的：
例句：
a cogent argument.See Synonyms at valid
有說服力的論據參見 valid

來源：
Latin côgôns côgent- [present participle of] côgere [to force]
拉丁語 côgôns côgent- [] côgere的現在分詞 [強有力]
co- [co-]
co- [前綴，表.相互，一起.]
agere [to drive] * see ag-
agere [驅使] *參見 ag-

【引伸】
co.gency
co.gently
adv.（副詞）