n. 25B6; noun
that note of irony in her voice : SARCASM, sardonicism, dryness, causticity, sharpness, acerbity, bitterness, trenchancy, mordancy, cynicism; mockery, satire, ridicule, derision, scorn; Brit. informal sarkiness.
the irony of the situation : PARADOX, incongruity, incongruousness, peculiarity.
sincerity.