From Longman Dictionary of Contemporary Englishoff-the-cuffˌoff-the-ˈcuff adjective [usually before noun] THINK ABOUTan off-the-cuff remark, reply etc is one that you make without thinking about it first SYN spontaneous —off-the-cuff adverb
Examples from the Corpus
off-the-cuff• Part of the reason is that, off-the-cuff, Mr Kantor has not yet learned to speak the language of trade buffs.• The press officer said that the president's statement was an off-the-cuff remark, not as an official statement of policy.• There were many hilarious discussions and off-the-cuff remarks.• I raise that as an off-the-cuff thought. 