Definition of the word earnest

The word "earnest" has a fascinating history. It comes from Old English "eornost", which means "serious" or "sincere". This word is derived from the Proto-Germanic word "*auriz", which is related to the Proto-Indo-European root "*aus-", meaning "to burn" or "to glow". In Middle English (circa 1100-1500), "earnest" took on a new meaning, referring to a token or pledge, such as a valuable object, handed over to demonstrate good faith in a negotiation or agreement. This sense of the word is still used today, as in "an earnest of good things to come". Over time, the meaning of "earnest" has expanded to include connotations of sincerity, seriousness, and heartfeltness. For example, "an earnest attempt" implies a genuine and sincere effort.