The word "belated" means something that is coming or happening later than should have been the case. "Tardy" is its most direct synonym.

১. Complaining is an expression of dissatisfaction, not related to timing.
২. "Off hand" means without prior thought or preparation, which differs from being late.
৩. Weak refers to lack of strength, whereas tardy refers to lack of punctuality.

অতিরিক্ত তথ্য: আমরা সাধারণত কোনো দিবস পার হওয়ার পর শুভেচ্ছা জানালে ‘Belated wishes’ বলে থাকি।