One who or that which betokens; something that serves as a sign or indication of something else.
Formed from betoken plus the suffix '-er', which creates agents (those who do something) or instruments (things that do something). This noun form identifies whatever serves as a sign.
A betokener is like nature's messenger—a raven could be a betokener of bad news in medieval literature, or a white dove a betokener of peace, just by existing!
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