American English

Definition of ail verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they ail
    he / she / it ails
    past simple ailed
    -ing form ailing
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  1. 1ail something (formal) to cause problems for someone or something They discussed the problems ailing the steel industry.
  2. 2 ail somebody (old use) to make someone sick What is ailing you?
See the Oxford Advanced Learner's Dictionary entry: ail