Before taking a look at exceptional and irregular verbs, let’s talk about this imperative verb:

hadd = let (sy do sg)

It is a general exclamation when we allow someone to do something or we tell someone to allow something to a third person. Do I make myself clear? 馃檪

So it聽can refer to all persons, but聽you should consider it as a modal verb which requires the main verb to be in imperative mood. So the formula is:

Hadd + verb conjugated in imperative mood

Hadd aludjon! = Let him/her sleep.

More examples:

Hadd menjek moziba! – Let me go to the cinema.
Hadd j谩tsszanak a f疟ben! – Let them play in the grass.
Hadd keljen fel k茅s艖bb! – Let him/her get up later.

J贸 枚tlet a t谩ny茅rba t眉sszenteni. Hadd kapjunk el valami betegs茅get!
Good idea sneezing in the plate. Lets聽catch some disease.

Adj neki p茅nzt, azt谩n, hadd menjen!
Give her some money, then let her go.

This word is not to be confused with this noun: had = army troops. By the way, you don’t really have to bother about the double d at the end of hadd. You can say a single d, too. If it goes along with a verb in imperative mood, we understand it’s hadd and not had anyway.

So next time “exceptional” verbs.