Which direct single-word synonym correctly completes the statement for the uppercase term?

Answer:An exact synonym for the adjective RIGID is 【stiff】.

stiff (or inflexible, unbending, firm)

The adjective 'rigid' describes something that is stiff, firm, or not easily bent; therefore, 'stiff' or 'inflexible' is an exact synonym.

Identify the part of speech and primary definition of the target word

The target word 'RIGID' is an adjective meaning unable to bend, inflexible, or stiff.

Accurate synonym matching requires establishing the core grammatical category and meaning.

Select a direct equivalent term that shares this meaning

'Stiff' expresses the physical quality of being unyielding or unable to bend.

Direct synonyms must cleanly replace the target word without altering its semantic value.

Direct semantic equivalence for isolated adjectives

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