- tagalong⇄adj. that is a tagalong.
Ex. For the first time in recent history, the No. 2 man on each ticket will not be a tagalong candidate (Newsweek). - tagalong⇄noun a person who follows along.
Ex. ""And me, I can say something too,"" said the little tagalong who was never to be outdone by her sisters or brother (Harper's). - tagalong⇄tagalong, noun, adjective.
(Informal.)