অর্থ : In a way that was not expected.
							উদাহরণ : 
							Her brother showed up at the wedding out of the blue.
							
সমার্থক : out of the blue
অর্থ : Without advance planning.
							উদাহরণ : 
							They met accidentally.
							
সমার্থক : accidentally, by chance, circumstantially
With intention. In an intentional manner.
He used that word intentionally.