The word 倒是 is formed through the conceptual fusion of its two component characters: 倒 (dào), which carries core notions of reversal, contradiction, or something being upside-down, and 是 (shì), which represents correctness, truth, or affirmation. Their combination creates a single lexical unit that encapsulates the idea of affirming something despite it being contrary to expectation or presenting a contrasting point, thus weaving together notions of contradiction and concession into a single expressive term.