Forsooth

Part of speech: noun (n.)

A person who used forsooth much; a very ceremonious and deferential person. [R.] You sip so like a forsooth of the city. B. Jonson.

Part of speech: verb (v.)

To address respectfully with the term forsooth. [Obs.] The captain of the "Charles" had forsoothed her, though he knew her well enough and she him. Pepys.

Part of speech: adverb (adv.)

In truth; in fact; certainly; very well; -- formerly used as an expression of deference or respect, especially to woman; now used ironically or contemptuously. A fit man, forsooth, to govern a realm! Hayward. Our old English word forsooth has been changed for the French madam. Guardian.