out of hand
indiscriminate
unconscious
uncollected
thoughtless
blindly
unconsidering
nonthinking
remindless
blithely
unthinking
irrespective of
inconsiderately
reflection
excogitation
unconsideringly
incogitancy
de dicto
abstractedly
unponderous
nonponderous
notionlessness
go off halfcocked
silly
rumination
mind
vague
on the hoof
perspectiveless
intentionless
viewpointless
prepositionless
notionless
unknowingly
thoughtproof
dereism
inadvertently
opinionless
unthoughtful
unreflective
unwittingly
uncaring
moony
regardless of
thoughtlike
off the top of one's head
nonthought
reflect on
let slide
any old how