transitive verb convulsed -·vulsed′, convulsing -·vuls′·ing

1. to shake or disturb violently; agitate
2. to cause convulsions, or spasms, in
3. to cause to shake as with laughter, rage, or grief

Etymology: < L convulsus, pp. of convellere, to tear loose < com-, together + vellere, to pluck: see revulsion