A primitive root; to knock; by analogy, to press severely -- beat, knock, overdrive.
H1849. daphaq
[דָּפַק] verb beat, knock (Arabic pour out, also drive (beasts)) —
Qal Perf.3masculine plural suffix וּדְפָקוּם consecutive Genesis 33:13, but read 1singular suffix ᵑ6 ᵐ5 וּדְפַקְתִּים Sam Di beat (in driving, drive severely or cruelly); Participle דּוֺפֵק Song of Solomon 5:2 absolute knocking (at door).
Hithpa`el Participle עַלהַֿדָּ֑לֶת מִתְדַּמְּקִים Judges 19:22 beat violently (beat themselves tired) against the door.