Another contender for frequentativity. Suggested as related to Fr. gosier, throat, or to Fr. gosiller, chirp (sing, eg like nightingale) which disappeared from use in favor of s'égosiller, emphasizing a more vigorous output through joy or anger, but this outward direction seems unlikely to generate un inward-directing action and I suspect a more probabe direct adaptation from gosier, as in to 'enthroat'. No clear evidence.