abstained — to hold oneself back voluntarily, especially from something regarded as improper or unhealthy (usually followed by from): to abstain from eating meat.
held — simple past tense and a past participle of hold1 .
kept — simple past tense and past participle of keep.
doubted — to be uncertain about; consider questionable or unlikely; hesitate to believe.
regurgitated — to give back or repeat, especially something not fully understood or assimilated: to regurgitate the teacher's lectures on the exam.
