Antonyms of adj unguarded

2 senses of unguarded

Sense 1
unguarded -- (lacking protection or a guard; "an unguarded gate"; "his unguarded queen was open to attack")

INDIRECT (VIA vulnerable) -> invulnerable -- (immune to attack; impregnable; "gunners raked the beach from invulnerable positions on the cliffs")

Sense 2
unguarded -- (displaying or feeling no wariness; "an unguarded remark")

INDIRECT (VIA unwary) -> wary -- (marked by keen caution and watchful prudence; "they were wary in their movements"; "a wary glance at the black clouds"; "taught to be wary of strangers")

Similarity of adj unguarded

2 senses of unguarded

Sense 1
unguarded -- (lacking protection or a guard; "an unguarded gate"; "his unguarded queen was open to attack")
       => vulnerable (vs. invulnerable) -- (susceptible to attack; "a vulnerable bridge")

Sense 2
unguarded -- (displaying or feeling no wariness; "an unguarded remark")
       => unwary (vs. wary) -- (not alert to danger or deception; "the shrieks of unwary animals taken by surprise"; "some thieves prey especially on unwary travelers"; "seduce the unwary reader into easy acquiescence"- O.J.Campbell)