Meaning

adjective characterized by directness in manner or speech; without subtlety or evasion

adjective informal or natural; especially caught off guard or unprepared

adjective openly straightforward and direct without reserve or secretiveness

originEtymology tree Proto-Indo-European *(s)kend-der. Proto-Italic *kandēō Latin candeō Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idus Latin candidusbor. English candid Borrowed from Latin candidus (“white”).

Etymology from Wiktionary, CC BY-SA 3.0