Antonyms of adv thoughtlessly

2 senses of thoughtlessly

Sense 1
thoughtlessly, unthinkingly, unthinking -- (in a thoughtless manner; "he stared thoughtlessly at the picture")
       Antonym of thoughtfully (Sense 1)
      => thoughtfully -- (in a thoughtful manner; "he stared thoughtfully out the window")

Sense 2
thoughtlessly -- (showing thoughtlessness; "he treated his parents thoughtlessly")
       Antonym of thoughtfully (Sense 2)
      => thoughtfully -- (showing consideration and thoughtfulness; "he had thoughtfully brought with him some food to share")

Synonyms of adv thoughtlessly

2 senses of thoughtlessly

Sense 1
thoughtlessly, unthinkingly, unthinking -- (in a thoughtless manner; "he stared thoughtlessly at the picture")

Sense 2
thoughtlessly -- (showing thoughtlessness; "he treated his parents thoughtlessly")