The definition of belated is something done late.
An anniversary celebrated the day after the actual date is an example of belated.
late or too late; tardy
Origin of belatedbe- + lat(e) + -ed
Having been delayed; done or sent too late: a belated birthday card.
Origin of belatedbe- lated
(comparative more belated, superlative most belated)
- Later in relation to the proper time something should have happened.
- Happy belated birthday!
- simple past tense and past participle of belate