Fib /(?)/

Fib

n.
  1. A falsehood; a lie; -- used euphemistically.
    They are very serious; they don't tell fibs.
    — H. James.

Fib

v. i.

imp. & p. p. Fibbed; p. pr. & vb. n. Fibbing

  1. To speak falsely. [Colloq.]

Fib

v. t.
  1. To tell a fib to. [R.]