hardened to (adjective) immune: invulnerable
Sinonime: bang into,
buffet,
butt, carom, clash, crash,
glance,
jostle,
knock,
light,
meet, meet head-on, pat, rap, run into,
scrape, sideswipe, smash,
stumble,
tap, thud, thump
Antonime: susceptible, unguarded, unprotected,
vulnerable