rattling

Used as intensifiers; `real' is sometimes used informally for `really'; `rattling' is informal.

“a rattling good yarn”

A rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders).

Quick and energetic.

“traveling at a rattling rate”

Extraordinarily good or great; used especially as intensifiers.

“had a rattling conversation about politics”