{adv. phr.} About to say something, such as a name, a telephone number, etc., but unable to remember it for the moment. * /"His name is on the tip of my tongue," Tom said. "It will come to me in a minute."/
{adv. phr.} {informal} 1. Almost spoken; at the point of being said. * /It was at the tip of my tongue to tell him, when the phone rang./ * /John had a rude answer on the tip of his tongue, but he remembered his manners just in time./ 2. Almost remembered; at the point where one can almost say it but cannot because it is forgotten. * /I have his name on the tip of my tongue./