1. Express strong condemnation of
   "We deplore the government's treatment of political prisoners"
    
2. Regret strongly
   "I deplore this hostile action";
   - lament, bewail, bemoan

Derived forms: deplored, deplores, deploring

Type of: complain, criticise [Brit], criticize, damn [informal], kick [informal], knock [informal], kvetch [N. Amer, informal], moan, pick apart, plain [archaic], sound off