offhandedly
1. [ adverb ] without previous thought or preparation
Synonyms: offhanded offhand
Examples:

"couldn't give the figures offhand" "we decided offhand to go to Canada" "she had made these remarks offhandedly"

Related terms: ad-lib ad-lib
2. [ adverb ] in a casually inconsiderate manner
Synonyms: offhanded offhand
Examples:

"replied offhand, his mind a million miles away" "she threw him over offhandedly without even a Dear-John letter"

Related terms: offhand offhand
Similar spelling:   offhanded
  off-hand
  offended
  offender