slap, strike
拊 centers on striking with an open hand: a slap or a hit delivered by hand.
拊 combines 扌 (hand) with 付, which likely contributes the sound and may relate to applying or attaching, suggesting a hand applied in a strike.
The hand radical 扌 beside 付 looks like a hand delivering a slap: the hand is attached to the action of striking.
For フ, imagine the sound of a quick slap: a sharp 'fu' as the hand hits. The 'fu' sound cues フ while the hand strikes.