Play word 言葉を尽くす 言葉を尽くす ことばをつくす to exhaust one's vocabulary (in trying to persuade someone or explain something, etc.)
Play word 巧言令色鮮し仁 巧言令色鮮し仁 こうげんれいしょくすくなしじん those who resort to blandishments and fawning smiles are apt to lack compassion
Play word 思う事言わねば腹膨る 思う事言わねば腹膨る おもうこといわねばはらふくる if you don't speak your mind, you'll feel uneasy afterwards