Answer:

stolid

Answer	Crossword Clue
STOLID	Impassive
STOLID	Unemotional
STOLID	Not easily excited

STOLID	Stone-faced
STOLID	Phlegmatic
STOLID	Apathetic
STOLID	Showing no emotion
STOLID	Unflappable
STOLID	Impassive.
STOLID	Phlegmatic.
STOLID	Unexcitable.

STOLID	Unexcitable
STOLID	Hard to stir
STOLID	Not easily stirred
STOLID	Wooden
STOLID	Having little emotion
STOLID	Calm and impassive

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.