And how destructive it can become if it's thoughtlessly used, without respect.
From the blogs.psychcentral.com
This was done not thoughtlessly, but in desperation, and with a heavy heart.
From the omaha.com
As for self-destructive behavior, that's what most would thoughtlessly deem selfish.
From the forbes.com
We will have a better future, instead of now, spiraling thoughtlessly down.
From the sacbee.com
Take a walk back to your hotel before you thoughtlessly decide to reload your wallet.
From the al.com
I'm astonished that the HMS Belfast could be so thoughtlessly removed.
From the dailymail.co.uk
This task is then thoughtlessly carried out, whether or not it will produce any result.
From the en.wikipedia.org
She also thoughtlessly sleeps with an older newsman, ruining his marriage with no regrets.
From the usatoday.com
They certainly didn't do so injudiciously, habitually or thoughtlessly.
From the guardian.co.uk
More examples
In a thoughtless manner; "he stared thoughtlessly at the picture"
"Thoughtless" is a song by Korn and the second single from their fifth album, Untouchables. It is about Jonathan Davis (the band's singer) being assaulted and harassed in school and dreaming of seeking revenge on those who bully him.