subordinating conjunction

or subordinate conjunction

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noun Grammar.
a conjunction introducing a subordinate clause, as when in They were glad when I finished.
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Also called sub·or·di·na·tor.

Origin of subordinating conjunction

First recorded in 1870–75; subordinate + -ing2
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How to use subordinating conjunction in a sentence

British Dictionary definitions for subordinating conjunction

subordinating conjunction

a conjunction that introduces subordinate clauses, such as if, because, although, and untilCompare coordinating 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