Found 2 items, similar to doubtless.
English → English (WordNet) Definition: doubtless doubtless adv : with certainty; “it's undoubtedly very beautiful” [syn: undoubtedly, beyond question, without doubt, beyond any doubt]
English → English (gcide) Definition: Doubtless Doubtless \Doubt"less\, a. Free from fear or suspicion. [Obs.] [1913 Webster] Pretty child, sleep doubtless and secure. --Shak. [1913 Webster] Doubtless \Doubt"less\, adv. Undoubtedly; without doubt. [1913 Webster]