Where does “pusachán” come from?

pusachán (Irish) comes from Irish pusach, from Irish pus, from Middle Irish bus, from Proto-Celtic bussus, from Proto-Indo-European bʰew- — to grow, swell; to swell, wax, grow; to blow; to...

pusachán (Irish): pouter, sulky person; blubberer, whimperer;...

Definitions

pouter, sulky person; blubberer, whimperer;...

Ancestry of “pusachán”, step by step

pusachán traces back through two separate lines of ancestry.

via Irish pusach

Step	Language	Word	Meaning
1	Irish	pusach	pouting, in a huff; whimpering, ready to cry
2	Irish	pus	mouth; sulky expression, pout; snout
3	Middle Irish	bus	lip
4	Proto-Celtic	bussus	lip
5	Proto-Indo-European	bʰew-	to grow, swell; to swell, wax, grow; to blow; to...

via Irish án

Step	Language	Word	Meaning
1	Irish	án	bright, brilliant; splendid, noble
2	Old Irish	ín	fast, period of fasting
3	Proto-Celtic	sindos	this
4	Proto-Indo-European	sḗm	one
5	Proto-Indo-European	sem-	together, one

Every word from Proto-Indo-European bʰew- →Every word from Proto-Celtic bussus →Every word from Middle Irish bus →