throb/θrɑb/Third PersonthrobsPresent ParticiplethrobbingPast TensethrobbedPast Participlethrobbed1expand and contract rhythmically; beat rhythmicallyCopySynonyms: pulsatepulse2pulsate or pound with abnormal forceCopy3tremble convulsively, as from fear or excitementCopySynonyms: thrillshuddershiver