valetudinarious UK /ˌvæ.ləˌtuː.dɪˈnɛəɹi.əs/US /ˌvæ.ləˌtu.dəˈnɛɹi.əs/ adjective1 •Sickly, infirm, valetudinarian. formsmore valetudinarious · most valetudinarious