Denshi Jisho — Online Japanese dictionary

口が巧い くちがうまい honeymouthed; glib; fair-spoken; cajoling; talking glibly
Expression, Adjective 
口が多い くちがおおい 1: talkative; loquacious; garrulous; voluble;
2: (Expression) having a large family to support; having too many mouths to feed
Expression, Adjective 
口が重い くちがおもい incommunicative; taciturn
Expression, Adjective 
口が堅い くちがかたい tight-lipped; able to keep a secret
Expression 
口が軽い くちがかるい having a loose tongue; being talkative; speaking without thinking
Expression, Adjective 
口が滑る くちがすべる to make a slip of the tongue; to let something slip
Expression, Godan verb with ru ending 
口が辷る くちがすべる to make a slip of the tongue; to let something slip
Out-dated kanji, Expression, Godan verb with ru ending 
口が悪い くちがわるい sarcastic; having a sharp (nasty) tongue
Expression, Adjective 
口汚ない くちぎたない foul-mouthed; abusive
Adjective 
口性ない くちさがない gossipy; abusive; critical; jabbering
Adjective 
口性無い くちさがない gossipy; abusive; critical; jabbering
Adjective 
口先だけ くちさきだけ insincere; giving lip-service; glib
Expression, No-adjective 
口寂しい くちさびしい longing to have or put something in one's mouth
Adjective 
口三味線 くちざみせん humming a samisen tune
Noun 
口に上る くちにのぼる to become the subject of rumours or conversations
Expression, Godan verb with ru ending 
口に入る くちにはいる to be able to eat
Expression, Godan verb with ru ending 
口に運ぶ くちにはこぶ to put into the mouth; to eat
Expression, Godan verb with bu ending 
口に含む くちにふくむ to hold in one's mouth (without biting, before chewing or swallowing, etc.)
Expression, Godan verb with mu ending 
口の堅い くちのかたい tight-lipped
Adjective 
口の軽い くちのかるい loose-tongued; talkative
Adjective 
口の悪い くちのわるい sarcastic; foulmouthed
Adjective 
口を噤む くちをつぐむ to hold one's tongue; to shut up
Godan verb with mu ending, Expression 
口を拭う くちをぬぐう to wipe one's mouth; to feign innocence; to feign ignorance
Expression, Godan verb with u ending 
口を挟む くちをはさむ to cut into (a conversation); to interject
Expression, Godan verb with mu ending 
口を開く くちをひらく to open one's mouth (to talk)
Expression, Godan verb with ku ending 
抗うつ剤 こううつざい antidepressant
Noun 

Found 3385 words. Page one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99

You can also

Look up kanji details for 口 こう.

Try a Yahoo Jisho search for 口 こう .
Try a Goo Jisho search for 口 こう .
Try a Google search for 口 こう .