unthinkingly
Definitions
In a manner that lacks thought, consideration, or reflection.
Without conscious awareness or deliberate intent; automatically.
Examples
He unthinkingly reached for his phone the moment he woke up.
She unthinkingly agreed to the request before considering her own schedule.
It is easy to unthinkingly follow the crowd instead of forming your own opinion.
Synonyms
mindlessly impulsively inadvertently carelessly automatically mechanically heedlessly
Antonyms
deliberately intentionally thoughtfully mindfully consciously purposefully carefully