thoughtless

Definition

Marked by or showing lack of due thought or care.

Etymology

From thought + -less.

Example Sentences

• "A thoughtless remark."
• "The debate turned into thoughtless bickering."
• "In thoughtless and breathless fear I rushed forward to avoid this host of demons, but while flying thus still more frightful and distorted shapes appeared, and I fancied I felt their hands clutching me."