
1) Abrupt 2) Ad-lib 3) Blasé 4) Brusque 5) Careless 6) Casual 7) Extemporaneous 8) Extemporary 9) Flippant 10) Frivolous 11) Impetuous 12) Impromptu 13) Muted 14) Nonchalant 15) Offhanded 16) Offhandedly 17) Unprepared 18) Unrehearsed
Found on
https://www.crosswordclues.com/clue/offhand

1) Ad-lib 2) Arrogant 3) Brusque 4) Careless 5) Casual 6) Extemporaneous 7) Extemporary 8) Extempore 9) Haughty 10) High-handed 11) Impromptu 12) Inconsiderate 13) Informal 14) Offhanded 15) Ungraciously nonchalant 16) Unprepared 17) Unrehearsed
Found on
https://www.crosswordclues.com/clue/offhand

• (a.) Instant; ready; extemporaneous; as, an offhand speech; offhand excuses. • (adv.) In an offhand manner; as, he replied offhand.
Found on
http://thinkexist.com/dictionary/meaning/offhand/
Off'hand` adjective Instant; ready; extemporaneous; as, an
offhand speech ;
offhand excuses. --
adverb In an offhand manner; as, he replied
offhand .
Found on
http://www.encyclo.co.uk/webster/O/13

The standing position for shooting a rifle from the shoulder. A stance generally not resulting in as fine accuracy as the other positions, kneeling, sitting and prone; but usually faster.
Found on
http://www.hallowellco.com/abbrevia.htm

[
adj] - casually thoughtless or inconsiderate 2. [adv] - without previous thought or preparation 3. [adv] - in a casually inconsiderate manner
Found on
http://www.webdictionary.co.uk/definition.php?query=offhand
offhanded adjective casually thoughtless or inconsiderate; `an offhand manner`; `she treated most men with offhand contempt`
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.