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1.
to be late, delayed

Often used as a way of saying something past the actual event.
Belated Happy Birthday!
Belated happy new year!
by Abdul-Baari July 03, 2005
 
2.
a word that people use when they forget things instead of saying i'm sorry.
happy belated birthday = shit, sorry i forgot your birthday
by Kanan September 24, 2007
 
3.
Be-Late-ed

The combination of being late and being high from marijuana.

In other words, showing up blazed and late.

The two coincide; the reason that one is late is due to that person being blazed.
I was so belated to my class, that I didn't even understand the lecture.

I would've known my que for drama class, if I hadn't been so belated.
by Colonial Cabinet July 27, 2010