blithe
adjective
[ blʌɪð ]
• showing a casual and cheerful indifference considered to be callous or improper.
• "a blithe disregard for the rules of the road"
Similar:
heedless,
uncaring,
careless,
casual,
indifferent,
thoughtless,
unconcerned,
unworried,
untroubled,
nonchalant,
cool,
blasé,
devil-may-care,
irresponsible,
Origin:
Old English blīthe, of Germanic origin; related to Dutch blijde, also to bliss.
