Source : Webster's Revised Unabridged Dictionary (1913)

Tardily \Tar"di*ly\, adv.
   In a tardy manner; slowly.

Source : WordNet®

tardily
     adv 1: without speed (`slow' is sometimes used informally for
            `slowly'); "he spoke slowly"; "go easy here--the road
            is slippery"; "glaciers move tardily"; "please go slow
            so I can see the sights" [syn: {slowly}, {slow}, {easy}]
            [ant: {quickly}]
     2: later than usual or than expected; "the train arrived late";
        "we awoke late"; "the children came late to school";
        "notice came so tardily that we almost missed the
        deadline"; "I belatedly wished her a happy birthday" [syn:
         {late}, {belatedly}] [ant: {early}]