Synonyms and related words :
begrime, besoil, bill and coo, blow a kiss, buss, copulate, dally, dirty, foul, grime, kiss, lip, lollygag, make love, make out, neck, osculate, osculation, peck, pet, smack, smirch, smudge, spoon, sweet-talk, tarnish, toy, trifle, wanton, whisper sweet nothings