Blab Definition

blăb

blabbed, blabbing, blabs

verb

blabbed, blabbing, blabs

To reveal (secret matters), especially through indiscreet or unreserved talk.

American Heritage

To give away (a secret) in idle chatter.

Webster's New World

To reveal secret matters indiscreetly.

American Heritage

To chatter; prattle.

Webster's New World

To chatter thoughtlessly or indiscreetly.

American Heritage

Synonyms:

Antonyms:

noun

An incessant or indiscreet talker.

American Heritage

Loose chatter; gossip.

Webster's New World

Lengthy chatter.

American Heritage

A person who blabs.

Webster's New World

One who blabs; a babbler; a telltale; a gossip or gossiper.

Wiktionary

Synonyms:

Origin of Blab

Middle English blabben to talk foolishly back-formation from blaberen

From American Heritage Dictionary of the English Language, 5th Edition
Middle English blabben (“to talk foolishly”), back-formation from blaberen.

From Wiktionary

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