Fibber

noun, slang

noun, slang ·Moderate ·College level

Definitions

Noun
  1. 1
    A liar. informal
  2. 2
    An FBI agent. derogatory, slang

    "This new ID and the new credit card will throw a wrench in the FBI's machine. Those Fibbers will never know what hit them."

  3. 3
    someone who tells lies wordnet

Synonyms

All synonyms
liarfabricatorfalse witnessfeebfeebiefibster

Example

More examples

"This new ID and the new credit card will throw a wrench in the FBI's machine. Those Fibbers will never know what hit them."

Etymology

From fib (“to lie”) + -er.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.