悪舌[akuzetsu] evil tongue
三寸の舌[sanzunnoshita] eloquent tongue
舌禍[zekka] slip of tongue
舌鼓を打つ[shitatsuzumiwoutsu] to smack one's lips at
舌先[shitasaki] tip of tongue

舌戦[zessen] war of words
舌っ足らず[shitatarazu] lisping
舌打ち[shitauchi] smacking lips
毒舌[dokuzetsu] wicked tongue

亘る[wataru] to cross over
幾年にも亘る[ikunennimowataru] extending over a number of years
亘古[kouko] for ever
連亘[renkou] extending in a row

に亘って[niwatatte] throughout
長きに亘る[nagakiniwataru] long (used with period of time)
に亘り[niwatari] throughout