Antonyms of adj offhand

2 senses of offhand

Sense 1
ad-lib, extemporaneous, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed -- (with little or no preparation or forethought; "his ad-lib comments showed poor judgment"; "an extemporaneous piano recital"; "an extemporary lecture"; "an extempore skit"; "an impromptu speech"; "offhand excuses"; "trying to sound offhanded and reassuring"; "an off-the-cuff toast"; "a few unrehearsed comments")

INDIRECT (VIA unprepared) -> prepared -- (made ready or fit or suitable beforehand; "a prepared statement"; "be prepared for emergencies")

Sense 2
offhand, offhanded -- (casually thoughtless or inconsiderate; "an offhand manner"; "she treated most men with offhand contempt")

INDIRECT (VIA careless) -> careful -- (exercising caution or showing care or attention; "they were careful when crossing the busy street"; "be careful to keep her shoes clean"; "did very careful research"; "careful art restorers"; "careful of the rights of others"; "careful about one's behavior")

Similarity of adj offhand

2 senses of offhand

Sense 1
ad-lib, extemporaneous, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff, unrehearsed -- (with little or no preparation or forethought; "his ad-lib comments showed poor judgment"; "an extemporaneous piano recital"; "an extemporary lecture"; "an extempore skit"; "an impromptu speech"; "offhand excuses"; "trying to sound offhanded and reassuring"; "an off-the-cuff toast"; "a few unrehearsed comments")
       => unprepared (vs. prepared) -- (without preparation; not prepared for; "unprepared remarks"; "the shock was unprepared"; "our treaty makers approached their immensely difficult problems unprepared"- R.E.Danielson)

Sense 2
offhand, offhanded -- (casually thoughtless or inconsiderate; "an offhand manner"; "she treated most men with offhand contempt")
       => careless (vs. careful) -- (marked by lack of attention or consideration or forethought or thoroughness; not careful; "careless about her clothes"; "forgotten by some careless person"; "a careless housekeeper"; "careless proofreading"; "it was a careless mistake"; "hurt by a careless remark")

Synonyms of adv offhand

2 senses of offhand

Sense 1
offhand, offhanded, offhandedly -- (without previous thought or preparation; "couldn't give the figures offhand"; "we decided offhand to go to Canada"; "she had made these remarks offhandedly")

Sense 2
offhand, offhanded, offhandedly -- (in a casually inconsiderate manner; "replied offhand, his mind a million miles away"; "she threw him over offhandedly without even a Dear-John letter")