[adjective]The words 'annoyed' and 'irritated' are more or less synonymous.The word 'annoyed' is more or less synonymous with 'irritated'.If you say that one thing is synonymous with another, you mean that the two things are so closely connected in most people's minds that one suggests the other.'Chanel' is for most people synonymous with style.Oscar Wilde's name is synonymous with wit.
SYNONYMOUS
Meaning of SYNONYMOUS in English
Cambridge English vocab. Кембриджский английский словарь. 2012