un·think·ing 
/ˌʌnˈθɪŋkɪŋ/ adjective
/ˌʌnˈθɪŋkɪŋ/ adjective [more unthinking; most unthinking] : done or said in a foolish or careless way without thinking about the possible effects
▪ unthinking remarks ▪ His unthinking agreement made me uneasy. : behaving in a foolish or careless way without careful thought ▪ unthinking consumers
▪ unthinking remarks ▪ His unthinking agreement made me uneasy. : behaving in a foolish or careless way without careful thought ▪ unthinking consumers
— un·think·ing·ly adverb
▪ She agreed to go unthinkingly. ▪ I unthinkingly put my purse on the roof of the car.
▪ She agreed to go unthinkingly. ▪ I unthinkingly put my purse on the roof of the car.
