foreplay /ˈfɔː(ɹ)pleɪ/noun 1verb 1forms 3 noun1 •The acts at the beginning of a (usually human) sexual encounter that serve to build up sexual arousal. verb1 •To engage in foreplay.I decided, while we were foreplaying, that I must get a supply, just in case. — 2002 formsforeplayed · foreplaying · foreplays