Synonyms of 'substitution'
replacementDictionary, exchange, switchlast-minute substitutions
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A change of clothes is an extra set of clothes that you take with you when you go to stay somewhere or to take part in an activity.
He stuffed a bag with a few changes of clothing.
a free exchange of information
Thesaurus for substitution from the Collins English Thesaurus
the act of substituting or state of being substituted