мучить, терзать
His crime preyed on his mind until he gave himself up to the police. — Его преступление не давало ему покоя, пока он не сдался полиции.
His health was bad, and this had no doubt preyed very much upon his mind. — У него было слабое здоровье, и это очень психически на него действовало.
Syn:torment, torture