Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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sub

sub

 
pronunciation:
suhb
parts of speech:
noun, intransitive verb
features:
Word Combinations (noun, verb), Word Explorer
part of speech: noun
definition 1: (informal) a submarine.
The sub aimed its torpedoes at the enemy ship.
definition 2: a substitute.
Our English teacher was sick today, so we had a sub.
similar words:
substitute
definition 3: a submarine sandwich.
definition 4: a subscription.
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part of speech: intransitive verb
inflections: subbed, subbing, subs
definition: (informal) to take the place of another; substitute for another.
I can sub for your class on Friday, but not on Thursday.
similar words:
double, fill in, substitute
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  education