bulletproof Synonyms

watertight unassailable unshakable toughened reinforced leakproof airtight armoured steel-plated armour-clad thick weatherproof vambrace tight unconquerable armor-clad absorbing bullets casquetel unpiercable heavily clad steel-clad unshielded unstoppable shatterproof pickelhaube undefeatable foolproof unbeatable unattackable all-conquering kevlar untouchable strong solid indestructible impregnable impervious impermeable impenetrable impassable hermetic fireproof cast iron bullet-proof bombproof ballproof armored armor indomitable invincible