The main meaning of this word is 'make worse': Such remarks only serve to aggravate the situation. It is also commonly used to mean 'annoy' or 'exasperate': It really aggravates me the way you always interrupt. Although this second use dates back to the 16th century, some people still disapprove of it.
Red, white, and blue recall the French tricolour. Red, yellow, and green are the pan-African colours. Red represents the common blood of mankind which links African and European nations. Effective date: 1 December 1958.