at the moment, unprepared, impromptu, informal, extemporary,
unpremeditated, ad-lib, off-the-cuff, off-the-record,
spontaneous, off the top of one's head*, unstudied,
unrehearsed, improvised, by ear; see also
"offhand." YourDictionary, n.d. Web. 15 May 2018. <http://thesaurus.yourdictionary.com/offhand>.
offhand. (n.d.). Retrieved May 15th, 2018, from http://thesaurus.yourdictionary.com/offhand
Spoken, performed, or composed with little or no preparation or forethought: