議論|ぎろんgiron[1]atamadaka (head-high)

1. noun, suru verb, transitive verbargument; discussion; dispute; controversy
   その議論ぎろんは穴あなだらけだ。↗

   The argument is full of holes.

• Synonym論議ろんぎWrittenClose to 「議論」 and largely interchangeable, but more at home in writing, common in news as 「論議を呼ぶ」; in speech people say 「議論」.
• Synonym討論とうろんNeutralFormal exchange and clashing of views on a set topic, typical of organized settings like 「討論会」; 「議論」 is not bound to any format.
• Synonym討議とうぎWrittenDiscussion aimed at reaching a conclusion, mostly in meetings and organizational decision-making; 「議論」 does not necessarily aim at a conclusion.
• SynonymディスカッションNeutralLoanword for organized discussions in classes and seminars, as in 「グループディスカッション」; for argument in general, use 「議論」.
• Synonym論争ろんそうWrittenDispute in which opposing sides each insist on their own views, as in 「論争を巻き起こす」; carries a stronger sense of opposition than 「議論」.
• Synonym論戦ろんせんWrittenIntense verbal battle between two sides, seen mostly in Diet and election coverage; stresses head-on confrontation even more than 「論争」.
• SynonymディベートNeutralLoanword often for debate contests or training with pro and con sides; can also mean discussion generally, but 「議論」 is not limited by format.
• Synonym評議ひょうぎWrittenPooling members' opinions to consult and decide, mostly in an organization's council, as in 「評議員」; 「議論」 is not tied to such settings.
• Synonym弁論べんろんWrittenPresenting one's case systematically before an audience or in court, as in 「弁論大会」; the emphasis is on one side's statement, while 「議論」 is an exchange.
• Synonym話し合うはなしあうNeutralEveryday verb for talking things over, as in 「家族で話し合う」, aiming at communication and consensus; more colloquial than 「議論する」.
• Synonym論じるろんじるWrittenWritten verb for expounding or discussing a topic in an orderly way, possibly by one person in writing; 「議論」 usually involves several people exchanging views.
• Synonym論ずるろんずるWrittenSame meaning as 「論じる」 but older in form and more literary, found mainly in writing; it differs from 「議論」 just as 「論じる」 does.
• Synonym話し合いはなしあいNeutralNoun for consultation or negotiation, as in 「話し合いで解決する」, stressing peaceful communication and consensus; 「議論」 stresses each person voicing their own views.
• Synonym対論たいろんWrittenFace-to-face debate or dialogue between two people or sides, common in interview shows and publications; 「議論」 is not limited by number or format.
• Synonym談論だんろんWrittenTalking and discussing, seen mostly in the set phrase 「談論風発」; rare in daily use, where people simply say 「議論」.
• Synonym争論そうろんWrittenRare, written-style word for a verbal dispute; in everyday speech say 「論争」 for argument and 「口論」 for a quarrel.
• Synonym熟議じゅくぎWrittenThorough, careful deliberation, mostly in policy and democratic-governance contexts; 「議論」 itself does not imply thoroughness or caution.
• Related審議しんぎFormalFormal word for examining and debating a bill or proposal to decide whether to approve it, as in 「法案を審議する」; in sports it also means a review of a ruling.
• Related談義だんぎNeutralCasual talk on a topic, as in 「野球談義」, and also a lecture, sermon or long-winded admonition; less serious than 「議論」.
• Related舌戦ぜっせんWrittenWritten word for a war of words, mostly in election and debate coverage; more combative and victory-seeking than 「議論」.
• Related言い合ういいあうNeutralEveryday verb for saying things to each other, as in 「冗談を言い合う」, and also for quarreling; in that sense it is emotional, unlike the reasoned 「議論する」.
• Related言い争いいいあらそいNeutralOrdinary noun for a quarrel or squabble with heated feeling; 「議論」 is an exchange of views and need not involve conflict.
• Related口論こうろんNeutralA quarrel or row, as in 「口論になる」, charged with emotional conflict; 「議論」 centers on exchanging views.
• Related争議そうぎWrittenDispute in which each side presses its own claims, mostly labor disputes as in 「労働争議」; not used for discussion in general.
• Related言い合いいいあいCasualColloquial word for bickering or trading heated words; emotional, whereas 「議論」 is about exchanging views and reasoning.
• Related言い争ういいあらそうNeutralOrdinary verb for quarreling or arguing with emotion; compared with 「議論する」 it is closer to a fight than to reasoned discussion.
• Related議するぎするWrittenWritten verb meaning to discuss or deliberate on something, in the pattern 「～を議する」; in everyday speech say 「議論する」 or 「話し合う」.
• Antonym沈黙ちんもくNeutralAntonym: saying nothing and keeping silent, as in 「沈黙を守る」; the opposite of 「議論」, where everyone voices their views.
• AntonymしじまWrittenAntonym: stillness and quiet all around, strongly literary; opposed to 「議論」 only in the sense of sound versus silence.

Use 「議論」 as the default for people exchanging their own views, in any format. Pick 「討論」 for formal, organized debate, 「討議」 for discussion aimed at a conclusion, 「論争」 for sharp opposition, 「話し合い」/「話し合う」 for everyday consultation toward consensus, and 「口論」, 「言い争い」 or 「言い合い」 for quarrels. 「ディスカッション」 and 「ディベート」 are loanwords for classroom or contest settings; 「論議」, 「審議」, 「熟議」, 「評議」 and 「弁論」 belong to written or formal contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 一ひとつの話題わだいについて複数ふくすうの人ひとが考かんがえや意見いけんを述のべあうこと。その考かんがえや意見いけん、論点ろんてん。