The superlative form of candid, meaning the most honest and straightforward without hiding anything.
From Latin candidus meaning 'white' or 'shining,' which evolved to mean 'pure' and then 'frank' in English. The superlative suffix -est was added to create the most intense form of the adjective.
The Romans originally used 'candidus' to describe white togas worn by political candidates—the idea being that a candidate wearing white was showing they had 'nothing to hide,' which is why candid eventually came to mean honest!
Complete word intelligence in one call. Free tier — 50 lookups/day.