Answer: steelier

AnswerCrossword Clue
STEELIERMore obdurate
STEELIERMore hardened, as a gaze
STEELIERMore firm.
STEELIERMore flintlike.
STEELIERMore adamant
STEELIERHarder
STEELIERMore intense, as a stare
STEELIERStronger and harder
STEELIERRelatively severe
STEELIERMore resolute
steelierresembling or suggesting steel (as in hardness, color, strength, or coldness) steely determination steely blue
steelierSTEELY, resembling steel
steelierde of steel