thoughtlessness

thoughtless | American Dictionary

thoughtless
adjective
us/ˈθɔt·ləs/
not showing care for others:
I’m sorry I was late – it was thoughtless of me not to call.

thoughtlessly

adverbus/ˈθɔt·ləs·li/
He thoughtlessly made an unkind remark about her mother.

Examples of thoughtless

thoughtless
As if we possessed a carnivore's teeth and digestive tract, thoughtless cliché places us 'at the top of the food chain'.
He simply tends in his haste to overvalue his personal interests and to be thoughtless regarding the other's agency interests.
The device of the cap was the woman's insurance against a thoughtless, or drunken, husband.
Any attempt to use a theory from outside tends to be met with a quick and thoughtless rejection with some counterexamples.
With the 'star architect' culture in full sway, a future unfolds of thoughtless, dead 'oceans' dotted occasionally with signature 'islands'.
The seventeenth century could see nothing wrong in that; even in the nineteenth century few showed sufficient ecological insight to warn against thoughtless exploitation of nature.
There appears to be a growing movement away from the reductionism and the thoughtless fact collecting that have, at times, appeared to be gaining the upper hand.
A being who does not display wisdom can be ignorant, foolish, silly, thoughtless, imprudent, irrational, or a bad judge of character, to name just a few possibilities.
The truth is revealingly but disappointingly thoughtless.
It would have encouraged him to focus on institutions and processes as well as individuals; to see that agency was distributed across many relatively thoughtless acts and casual decisions.
It argues that this discourse influenced the fashioning of seventeenth-century commercial policy, which rather than being simply thoughtless and reactive, could be responsive to contemporary debates about trade.
Obstructions may be caused by thoughtless, rather than malicious, people parking their vehicles on pavements.
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