Word family noun think rethink thinker thinking the unthinkable adjective thinkable ≠ unthinkable thinking ≠ unthinking verb think rethink adverb unthinkingly
From Longman Dictionary of Contemporary Englishunthinkingun‧think‧ing /ʌnˈθɪŋkɪŋ/ adjective CARELESSnot thinking about the effects of something you say or do —unthinkingly adverbExamples from the Corpus
unthinking• But they ignored the unthinking acceptance that Jeffries enjoyed among a far wider circle of students.• The constant repetition of an untruth did not make anyone believe, but it could batter the brain into unthinking apathy.• Trolls are greatly feared because of their unthinking ferocity and indiscriminate appetite.• They can be the quiet, but unthinking types who are simply unaware of their lack of knowledge. 