foreplay

n [U] sexual activity such as caressing the sexual organs and kissing before sexual intercourse 性交之前的性活动（如抚摸性器官、 亲吻）.

foregoing, foregone, foreground, forehand, forehead, foreign, foreign exchange, Foreign Secretary, foreigner, foreignness, foreknowledge, foreland, foreleg, forelock, foreman, foremost, forename, forenoon, forensic, foreordain, forerunner, foresail, foresee, foreseeable, foreseen, foreshadow, foreshore, foreshorten, foresight, foreskin, forest, forestall, forested, forester, forestland, forestry, foretaste, foretell, forethought, foretold,