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conˈcessive

British  
/ kənˈsɛsɪv /

adjective

  1. implying or involving concession; tending to concede

  2. grammar a conjunction, preposition, phrase, or clause describing a state of affairs that might have been expected to rule out what is described in the main clause but in fact does not

    "Although" in the sentence "Although they had been warned, they refused to take care" is a concessive conjunction

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of conˈcessive

C18: from Late Latin concēssīvus, from Latin concēdere to concede