きちんとkichinto

1. adverb, suru verbproperly; accurately; exactly; precisely; regularly
   私の時計とけいはきちんと動うごいている。↗

   My watch is running all right.
2. adverb, suru verbneatly; tidily; orderly
   自分じぶんの部屋へやは出来できるだけきちんとしておきたい。↗

   I want to keep my room as neat as possible.

• SynonymちゃんとCasualMore common in speech and often interchangeable; 「ちゃんと」 stresses earnest, reliable follow-through, while 「きちんと」 leans toward neatness and following the rules.
• SynonymきちっとCasualMore emphatic than 「きちんと」 about being exact and fitting perfectly, with a crisper feel, as in 「きちっと揃える」.
• SynonymきっちりNeutralStresses amounts or times being exactly right, or things packed tight, as in 「きっちり三時」; 「きちんと」 is about being orderly rather than exact.
• SynonymぴったりNeutralFocuses on fitting snugly, matching perfectly or stopping abruptly, as in 「ぴったり合う」; 「きちんと」 is about doing things properly and neatly.
• Synonym正しくただしくNeutralEmphasizes right versus wrong — doing something without error or the correct way, as in 「正しく使う」; 「きちんと」 is about orderliness, not sloppiness.
• SynonymしかとWrittenWritten and slightly old-fashioned; means certainly or firmly, as in 「しかと見届ける」; 「きちんと」 is about neatness and order.
• SynonymきちんきちんCasualReduplicated form stressing that something is done meticulously and regularly every time, as in 「きちんきちんと払う」; plain 「きちんと」 is more common.
• SynonymしかるべくWrittenWritten style meaning appropriately or as required, common in official documents, as in 「しかるべく処理する」; 「きちんと」 is more conversational.
• RelatedちょうどNeutralFocuses on a time or amount matching exactly, as in 「ちょうど十時」; 「きちんと」 is about doing things properly and neatly.
• Related正確せいかくNeutralA na-adjective stressing accuracy, as in 「正確な時刻」; 「きちんと」 is an adverb about being orderly and proper.
• RelatedまさにNeutralStresses that something is truly or exactly the case, as in 「まさにその通り」; it overlaps with 「きちんと」 only in the just/exactly sense.
• RelatedかっちりCasualDescribes a snug fit or firm, stiff contours, as in 「かっちりしたスーツ」; 「きちんと」 is about being neat and by the book.
• RelatedしゃんとCasualSitting or standing upright and alert; mostly about posture, as in 「しゃんとしなさい」; 「きちんと」 also covers work, dress and more.
• RelatedぴたっとCasualA mimetic word for clinging tightly or stopping at once, vivid in speech; 「きちんと」 is about neatness and order, not about fitting.
• RelatedきりっとCasualDescribes a crisp, taut look or bearing, as in 「きりっとした顔」; 「きちんと」 is about being neat and following the rules.
• RelatedこざっぱりNeutralFor clothes or rooms that are clean, fresh and unshowy; 「きちんと」 is about being orderly and by the rules.
• RelatedそつなくNeutralDoing something smoothly and flawlessly, with no fault to find, as in 「卒なくこなす」; 「きちんと」 is about doing it earnestly by the rules.
• Antonymいい加減いいかげんNeutralAntonym in attitude toward tasks: careless, perfunctory and irresponsible, the opposite of 「きちんと」's proper approach.
• Antonymだらし無いだらしないNeutralAntonym in appearance and lifestyle: sloppy, untidy and undisciplined, the opposite of 「きちんと」.

Use 「きちんと」 for doing things properly, neatly and by the rules; in speech 「ちゃんと」 is the usual choice. For exact amounts or times pick 「きっちり」 or 「ちょうど」, for a snug fit 「ぴったり」, for upright posture 「しゃんと」. Others narrow the sense: 「正しく」 correctness, 「正確」 accuracy, 「こざっぱり」 clean simple tidiness, 「卒なく」 flawless handling, 「まさに」 just/exactly, and the written 「しかと」 and 「しかるべく」. Antonyms: 「いい加減」 (careless) and 「だらし無い」 (sloppy).

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

1. 整ととのっているさま。
2. 正確せいかくなさま。規則きそく正ただしいさま。