unthinking

un·think·ing

adj \ˌən-ˈthiŋ-kiŋ\

Definition of UNTHINKING

1

: not taking thought : heedless, unmindful <the unthinking onlookers>

2

: not indicating thought or reflection <an unthinking decision>

3

: not having the power of thought

— un·think·ing·ly \-kiŋ-lē\ adverb

Examples of UNTHINKING

1. His unthinking agreement made me uneasy.

First Known Use of UNTHINKING

1676

Rhymes with UNTHINKING

freethinking, unblinking