un·guard·ed 
/ˌʌnˈgɑɚdəd/ adjective
/ˌʌnˈgɑɚdəd/ adjective 1 : speaking carelessly without thinking about what you are saying : direct and honest especially when you should be cautious
▪ an unguarded remark ▪ I let the secret about the surprise party spill out in an unguarded moment. 2 : not protected or watched over
▪ an unguarded border
▪ an unguarded remark ▪ I let the secret about the surprise party spill out in an unguarded moment.
▪ an unguarded border
