Source : Webster's Revised Unabridged Dictionary (1913)

Utterly \Ut"ter*ly\, adv.
   In an utter manner; to the full extent; fully; totally; as,
   utterly ruined; it is utterly vain.

Source : WordNet®

utterly
     adv 1: completely and without qualification; used informally as
            intensifiers; "an absolutely magnificent painting"; "a
            perfectly idiotic idea"; "you're perfectly right";
            "utterly miserable"; "you can be dead sure of my
            innocence"; "was dead tired"; "dead right" [syn: {absolutely},
             {perfectly}, {dead}]
     2: with sublimity; in a sublime manner; "awaking in me,
        sublimely unconscious, interest and energy for tackling
        these tasks" [syn: {sublimely}]