THINK ABOUTan off-the-cuff remark, reply etc is one that you make without thinking about it first 未经准备的，当场的，即席的SYN spontaneous
—off-the-cuffadverbadv
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.