synonymous
Concise Oxford English Dictionary © 2008 Oxford University Press:
synonymous /sɪˈnɒnɪməs/
▶adjective (of a word or phrase) having the same meaning as another word or phrase in the same language.
■ closely associated with something: his name was synonymous with victory.
– derivatives
synonymously adverb,
synonymousness noun.
synonymously adverb,
synonymousness noun.
'synonymous' also found in these Oxford entries:

