conˈcessive

/ 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

Word History and Origins

Origin of conˈcessive¹

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