adv ·Rare ·Advanced level

Definitions

Adverb

1. 1
   Done without thinking.

   "He thoughtlessly invited her to come jogging, as he knew she hated exercise."

Adverb

1. 1
   showing thoughtlessness wordnet
2. 2
   in a thoughtless manner wordnet

Synonyms

All synonyms

any old wayanyhowcarelesslyclumsilyhaphazardlyhastily

Antonyms

All antonyms

thoughtfully

Example

More examples

"The problem is too important to try to solve it immediately and thoughtlessly."

Etymology

From thoughtless + -ly.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.