Random Events Expressions

noun chance is a noun that refers to a possibility of something happening without planning or design.

adverb by chance is an adverb because it modifies a verb, adjective, or another adverb by indicating that something happened unexpectedly or without planning.

preposition by is a preposition that shows the relationship between 'chance' and the action being described.

• By chance, I happened to run into my old college professor at the conference.
• I saw my ex-girlfriend at the mall by chance.
• I found this cool vintage jacket at the thrift store by chance.
• By chance, the two rival gangs ended up sitting at the same table and surprisingly got along.