Thoughtless

/ˈθɔt.ləs/

Meaning & Definition

adjective
showing a lack of consideration for others; inconsiderate.
His thoughtless remarks hurt her feelings deeply.
done without thinking; careless.
It was thoughtless of her to leave the door unlocked all night.
oblivious to or lacking in thought.
The thoughtless decision led to a series of problems for the team.
lacking in thought or reflection.
Her thoughtless attitude towards her studies worried her parents.

Etymology

Combining 'thought' and the suffix '-less' to imply a lack of thought.

Common Phrases and Expressions

thoughtless act
An action done without regard for its effects on others.
thoughtless behavior
Conduct that shows a lack of concern for others.

Related Words

considerate
Showing careful thought and concern for others.
careless
Lacking attention or concern; negligent.

Slang Meanings

Dumb move
That was a total dumb move to ignore her message.
Space cadet
He's such a space cadet for forgetting her birthday.