Contentious (adjective)
متنازع، جھگڑالو، تکراری
causing or likely to cause an argument; controversial.
Example: “a contentious issue”
Synonyms: controversial, disputable, debatable, disputed, contended, open to question/debate
Antonyms: uncontroversial
Cogent (adjective)
معقول، پختہ،موثر
(of an argument or case) clear, logical, and convincing.
Example: “they put forward cogent arguments for British membership”
Synonyms: convincing, compelling, strong, forceful, powerful, potent, weighty, valid, sound, well founded
Antonyms: vague, unconvincing, muddled