This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To shake or agitate violently: tremors that convulsed the countryside; when civil war convulsed the nation. See Synonyms at agitate.

v. To affect with irregular and involuntary muscular contractions; throw into convulsions.

v. To cause to shake with laughter or strong emotion.

verb-intransitive. To become affected by or as if by convulsions; shake.

v. To violently shake or agitate.

v. To create great laughter.

v. To contract violently and irregulary, as the muscular parts of an animal body; to shake with irregular spasms, as in excessive laughter, or in agony from grief or pain.

v. To agitate greatly; to shake violently.

To draw or contract spasmodically or involuntarily, as the muscular parts of an animal body; affect by irregular spasms: as, his whole frame was convulsed with agony.

To shake; disturb by violent irregular action; cause great or violent agitation in.

v. be overcome with laughter

v. cause to contract

v. move or stir about violently

v. make someone convulse with laughter

v. contract involuntarily, as in a spasm

v. shake uncontrollably

"Which wasn’t too bad until I noticed it was absolutely everywhere and started to convulse from the overdose."

convulsed    convulses    convulsing   

laugh    express mirth    express joy    compress    press    compact    squeeze    contract    constrict    amuse   

convulsion    convulsant    convulsive   

tear    shake    rend    agitate    disturb    shaken   

vivocity    called?    mad    mole-like    deep    carolling    renovator    expedtion    water-cress    respire