guarded UK /ˈɡɑːdɪd/US /ˈɡɑɹdɪd/ adjective4 •Watched over; supervised. •Cautious; restrained.The employees reacted with guarded optimism to the new agreement reached by their trade union. •A good outcome has fair odds of happening but close monitoring is important because odds of deterioration are not low.prognosis is guarded •Having a guard, e.g. a crossguard (on a sword), a faceguard (on a helmet), or a hatguard (on a chapeau).On the helmet , which is of gold, affrontee, guarded with perpendicular bars, and adorned with a mantled gules, doubled, or, is this crest. — 1819 formsmore guarded · most guarded