bulletproof Synonyms

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