Analogy (verbal reasoning): Identify the pair with the same relationship as "WAN : COLOUR". Interpret “lacking/deficient in the named quality.” Choose the option that best preserves this deficiency relationship.

Concept/Approach
“Wan” describes something lacking in colour. We seek “adjective meaning lacking in X : X.”

Option analysis
insipid:flavour — insipid means lacking in flavour. Perfect match.pallid:complexion — pallid means pale (low color) in complexion, but the relation is description of a specific noun; still close but less general than the direct “lacking in.”corpulent:weight — corpulent means fat (excess), not lacking.enigmatic:puzzle — enigmatic means puzzling; not “lacking in.”

Final Answer
insipid:flavour