displaying or feeling no wariness; "an unguarded remark"; "spilled the beans in an incautious moment"

Unguarded was the ninth album by Christian music singer Amy Grant, released in 1985 (see 1985 in music).

To present participles which come from intransitive verbs, or are themselves employed as adjectives, to mark the absence of the activity, disposition, or condition implied by the participle;

lacking protection or a guard; "an unguarded gate"; "his unguarded queen was open to attack"

not accompanied by another card in the same suit, or accompanied by insufficient cards in the suit to prevent its being captured by higher enemy cards.