Variation of the pronoun itself.
atself (not comparable)
- (Britain dialectal, Ireland) Actually; really.
2000, Roger Boylan, Killoyle:
- "Ach sure, there's no harm in the one drink atself, but wasn't Mrs. Farrell telling us Father had an extra twelve last night after his tay?"
- (Britain dialectal, Ireland) Merely; even; only so much as.