1. accustomed. Usual, customary, habitual refer to a settled and constant practice. Usual indicates something that is to be expected by reason of previous experience, which shows it to occur more often than not: There were the usual crowds at the celebration. Something that is customary is in accordance with prevailing usage or individual practice: It is customary to finish up with a bonfire. That which is habitual has become settled or constant as the result of habit on the part of the individual: The merchants wore habitual smiles throughout the season. 2. general, prevailing, prevalent, familiar, regular. 3. expected, predictable.