弁舌【べんぜつ】
speech, eloquence, manner of speaking, manner of expression
舌戦【ぜっせん】
war of words
毒舌【どくぜつ】
wicked tongue, sharp tongue, abusive language
二枚舌【にまいじた】
double-dealing, duplicity, equivocation, double-tongued
舌打ち【したうち】
clicking one's tongue, tut-tut, smacking one's lips (with relish)