Denshi Jisho — Online Japanese dictionary

交う かう to take turns; to mingle together
Godan verb with u ending 
交互 こうご mutual; reciprocal; alternate
Common word, Noun, No-adjective 
交差 こうさ 1: crossing; intersection;
2: (genetic) crossing over
Common word, Noun, Suru verb, No-adjective 
交付 こうふ delivering; handing over; furnishing (e.g. with copies); issuance; issuing
Common word, Noun, Suru verb 
交喙 いすか common crossbill (Loxia curvirostra)
Noun, Usually written using kana alone 
交す かわす 1: to exchange (messages, greetings, arguments, etc.);
2: to intersect; to cross; to interlace;
3: () ... with one another; ... to each other
Irregular okurigana usage, Godan verb with su ending, Transitive verb 
交宜 こうぎ friendship; amity
Noun 
交誼 こうぎ friendship; amity
Noun 
交叉 こうさ 1: crossing; intersection;
2: (genetic) crossing over
Noun, Suru verb, No-adjective 
交尾 こうび copulation (in animals)
Noun, Suru verb, No-adjective 
交附 こうふ delivery; grant; handing (a ticket) to (a person)
Noun, Suru verb 
交る まじる to be mixed; to be blended with; to associate with; to mingle with; to interest; to join
Irregular okurigana usage, Godan verb with ru ending, Intransitive verb 
交わす かわす 1: to exchange (messages, greetings, arguments, etc.);
2: to intersect; to cross; to interlace;
3: () ... with one another; ... to each other
Common word, Godan verb with su ending, Transitive verb 
交ざる まざる to be mixed; to be blended with; to associate with; to mingle with; to join
Common word, Godan verb with ru ending, Intransitive verb 
交じり まじり mixed; mingled
Common word, Noun, Noun suffix 
交じる まじる to be mixed; to be blended with; to associate with; to mingle with; to interest; to join
Common word, Godan verb with ru ending, Intransitive verb 
交ぜる まぜる to mix; to stir; to blend
Common word, Ichidan verb, Transitive verb 
交尾む つるむ to copulate (animals); to mate
Godan verb with mu ending, Intransitive verb 
交 こもごも alternately; in succession
Adverb, Usually written using kana alone 
交易 こうえき trade; commerce
Common word, Noun, Suru verb 
交換 こうかん exchange; interchange; switching; reciprocity; barter; substitution; replacement; clearing (of checks, cheques)
Common word, Noun, Suru verb 
交際 こうさい company; friendship; association; society; acquaintance
Common word, Noun, Suru verb 
交錯 こうさく mixture; blending; complication
Common word, Noun, Suru verb 
交信 こうしん telecommunications; correspondence
Common word, Noun, Suru verb 
交戦 こうせん war; battle; hostilities
Common word, Noun, Suru verb 
交代 こうたい alternation; change; relief; relay; shift; substitution (sports, etc.)
Common word, Noun, Suru verb 
交替 こうたい alternation; change; relief; relay; shift; substitution (sports, etc.)
Common word, Noun, Suru verb 
交通 こうつう traffic; transportation; communication; exchange (of ideas, etc.); intercourse
Common word, Noun, Suru verb 

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