to stop yourself from saying sth that might upset sb or cause an argument, although you want to speak :
I didn't believe her explanation but I bit my tongue.
to stop yourself from saying sth that might upset sb or cause an argument, although you want to speak :
I didn't believe her explanation but I bit my tongue.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005