In the following question, sentence given with blank is to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Since I forgot about Jeetu's birthday last week, I will send him a ________ greeting today.

* Belated means coming or happening later than should have been the case. It is standard usage to say "belated birthday wishes" or "belated greeting" when you miss the actual date.
Timely means done or occurring at a favorable or useful time.

Unpunctual means not arriving or happening at the fixed time (usually used for people).

Tardy means delaying or delayed beyond the right or expected time; late. While similar to late, "belated" is the conventional term specifically for greetings sent after an event.