steely

Etymology

From steel + -y.

adj

1. Having qualities resembling those of steel, especially hard and resolute.
   The bully backed down before his steely gaze.
   steely grey hair
   Freddie Woodman was ultimately the hero after making a superb 74th-minute penalty save to deny Adalberto Peñaranda. Woodman, the son of former Northampton Town goalkeeper Andy and godson of Southgate, made a steely left-handed save from the spot-kick after Dominic Calvert-Lewin had given England a first-half lead. June 11, 2017, Ben Fisher, “England seal Under-20 World Cup glory as Dominic Calvert-Lewin strikes”, in the Guardian
2. Made of steel.
   And in the master's chambers / They gathered for the feast / They stab it with their steely knives / But they just can't kill the beast 1977, “Hotel California”, in Don Henley, Glenn Frey (lyrics), Don Felder and Joe Walsh (music), Hotel California