verb
to join or connect together
adjective
being in a romantic relationship or partnership
adverb
in a paired or joined manner
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The two colleagues decided to work together and coupled up to tackle the project.
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I heard that Sarah and John finally coupled up after months of flirting.
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Did you see those two lovebirds? They totally coupled up last night.
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The new software and hardware are coupled up to create a seamless user experience.