Synonyms and related words :
Argus-eyed, all ears, all eyes, aux aguets, covering, defensive, eagle-eyed, fostering, guarded, guardian, guarding, hawk-eyed, immunizing, keen-eyed, lidless, observant, on guard, on the lookout, on the watch, open-eyed, parental, preventive, prophylactic, protecting, protective, prudent, safeguarding, screening, sharp-eyed, sheltering, shielding, sleepless, tutelary, vigilant, wary, watchful, with open eyes