3 adverbs to describe how to expressionless

It was simply exceedingly expressionless.

Austin!" Morrison rose, but stood quietly by his chair, his face entirely expressionless, palpably and correctly "at attention."

Monotonously and with utterly expressionless eyes, he raised and lowered his arms a few inches or so, in order to bring back their vitality, which had been destroyed by a nervous shock.

3 adverbs to describe how to  expressionless  - Adverbs for  expressionless