Denshi Jisho — Online Japanese dictionary

クオーク quark
Noun 
クオータ 1: quarter;
2: someone with one non-Japanese grandparent;
3: quota
Noun 
クオーツ quartz
Noun 
クギベラ bird wrasse (Gomphosus varius)
Noun 
クサガメ 1: (Usually written using kana alone) Chinese pond turtle (Chinemys reevesii); Reeves' turtle;
2: stink bug; shield bug
Noun 
くさくさ feeling depressed
Adverb, Noun, Suru verb, Onomatopoeic or mimetic word 
クサグモ Agelena limbata (species of araneomorph funnel-web spider)
Noun, Usually written using kana alone 
クサフグ grass puffer (Takifugu niphobles)
Noun, Usually written using kana alone 
クジャク peafowl (inc. the male peacock, female peahen, and young peachick)
Noun, Usually written using kana alone 
くすくす chuckle; giggle
Noun, Adverb, Suru verb, Onomatopoeic or mimetic word 
クスクス 1: couscous () ;
2: cuscus (variety of phalanger)
Noun 
くすねる to pilfer; to filch; to swipe
Ichidan verb, Transitive verb 
クスノキ camphor tree (Cinnamomum camphora); camphorwood; camphor laurel
Noun, Usually written using kana alone 
クセノン xenon (Xe)
Noun 
クソトビ common buzzard (Buteo buteo)
Noun, Usually written using kana alone, Colloquialism, Obscure term 
クソバエ greenbottle
Noun, Colloquialism 
クソボケ shit for brains
Noun, Usually written using kana alone, Derogatory 
クソミソ 1: harsh; severe (e.g. criticism, verbal attack);
2: (Noun) (Usually written using kana alone) sweeping denunciation
Na-adjective, Noun 
くたばれ fuck you!; shove it!; go to hell!; drop dead!
Expression, Rude or X-rated term, Vulgar expression or word, Kantou dialect 
くだくだ tediously; lengthily; wordily
Adverb taking the 'to' particle, Onomatopoeic or mimetic word 
クチクラ cuticule (lat: cuticula)
Noun 
クチコミ 1: word of mouth;
2: comment on an Internet forum or web page
Noun 
クチナシ Cape jasmine (Gardenia jasminoides); Cape jessamine; gardenia
Noun, Usually written using kana alone 
クックッ 1: chuckle; stifled laughter; giggle;
2: cluck; coo (bird call)
Noun, Adverb taking the 'to' particle 
クックー cuckoo
Noun 
クッシー Kusshi (lake monster said to be living in Hokkaido's Lake Kussharo)
Noun 

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