BACKUP
    
Meaning of BACKUP in English
	
n. Function: noun
 Synonyms: SUBSTITUTE 1, alternate, fill-in, locum tenens, pinch hitter, replacement, stand-in, sub, succedaneum, surrogate
	
	Merriam Webster.
	Collegiate thesaurus English dictionary.
    	Английский энциклопедический толковый словарь тезауруса.
	2012