All 4 Uses

infernal
in
Riders of the Purple Sage
(Auto-generated)

As infernal a job as even you, Lassiter, ever heerd of.†
Chpt 12 *
The golden glare vanished; all was black; then came the splitting crack and the infernal din of echoes.†
Chpt 13
When had silence been so infernal?†
Chpt 19
Part reason he was sore because Milly refused to give you Mormon teachin', but mostly he still hated Frank Erne so infernally that he made a deal with Oldrin' to take you an' bring you up as an infamous rustler an' rustler's girl.†
Chpt 21

Definitions:

(1) (infernal)
very bad; or very annoying; or characteristic of hell or the underworld
(2) (meaning too rare to warrant focus)