The word 全都 is formed by combining two characters that each independently convey ideas of completeness or totality: 全 (quán) meaning "entire", "whole", or "complete", and 都 (dōu) meaning "all" or "even". Their combination is not arbitrary but follows a common pattern in Chinese where semantically similar characters are paired to create a single, reinforced concept, in this case, an emphatic sense of "all without exception" or "the entirety of". The formation is essentially additive, where the two elements converge to intensify and solidify the overarching meaning of total inclusiveness.