Source : Webster's Revised Unabridged Dictionary (1913)

Usual \U"su*al\, a. [L. usualis, from usus use: cf. F. usuel.
   See {Use}, n.]
   Such as is in common use; such as occurs in ordinary
   practice, or in the ordinary course of events; customary;
   ordinary; habitual; common.

         Consultation with oracles was a thing very usual and
         frequent in their times.                 --Hooker.

         We can make friends of these usual enemies. --Baxter.
   -- {U"su*al*ly}, adv. -- {U"su*al*ness}, n.

Source : WordNet®

usual
     adj 1: occurring or encountered or experienced or observed
            frequently or in accordance with regular practice or
            procedure; "grew the usual vegetables"; "the usual
            summer heat"; "came at the usual time"; "the child's
            usual bedtime" [ant: {unusual}]
     2: commonly encountered; "a common (or familiar) complaint";
        "the usual greeting" [syn: {common}]