questionable Example Sentence:

Sometimes original art works appear questionable or inauthentic because they've had so many restorers add touch-up layers to cover up damage, damage from the paint having deteriorated over time.

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Related: questionable

Prev: Allow things of questionable quality to proceed.

Next: There are those who consider it questionable that these defense-linked research projects will either improve our standard of living or do much to protect our diminishing resources.