Meaning of the word "as though" in English

What does "as though" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

as though

US /æz ðoʊ/
UK /æz ðəʊ/

Conjunction

as if; as it would be if

Example:
He acted as though he had never seen me before.
She looked as though she hadn't slept in days.