From Latin convulsus, past participle of convellere (“to pluck up, dislocate, convulse”), from com- (“together”) + vellere (“to pluck, pull”)
For spelling, the -e (on -lse) is so the end is pronounced /ls/, rather than /lz/ as in gulls, and does not change the vowel (‘u’). Compare else, false, pulse.
convulse (third-person singular simple present convulses, present participle convulsing, simple past and past participle convulsed)
- (transitive) To violently shake or agitate.
- (transitive) To create great laughter.
- feminine plural of convulso
- vocative masculine singular of convulsus
- first-person singular (eu) present subjunctive of convulsar
- third-person singular (ele and ela, also used with você and others) present subjunctive of convulsar
- third-person singular (você) affirmative imperative of convulsar
- third-person singular (você) negative imperative of convulsar