As an initialism lah
is (inorganic compound) lithium aluminium hydride.
As a proper noun yah is
An anglicised spelling of la.
From (etyl) lah or (etyl)
(Manglish), Placed at the end of a sentence either for emphasis or reassurance.
* Don’t think so much lah !
* It's okay lah - It's alright. Don't worry about it.
An alternative pronunciation, akin to yeah.
(UK, India, South Africa) Yes.
- Yah , we did go along but it turned out the wedding was a load of nonsense.
From the pronunciation of “yes” which such people use.
(British, informal) An upper-class person, especially a Sloane Ranger.