• (RP) IPA: /ˈtɛtə/
• (GA) IPA: /ˈtɛtɚ/, /-ɾɚ/

tetter

1. (now rare) Any of various pustular skin conditions.
   • 1624, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy: […], 2nd edition, Oxford, Oxfordshire: Printed by John Lichfield and James Short, for Henry Cripps, OCLC 54573970 ↗, partition II, section 3, member 2:

     Angelus Politianus had a tetter in his nose continually running, fulsome in company, yet no man so eloquent and pleasing in his works.

tetter (tetters, present participle tettering; past and past participle tettered)

1. To affect with tetter#Noun|tetter.
   • c. 1599–1602, William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act 1, scene 5]:

     {...}} And all my smooth body, barked and tettered over.

tetter (plural tetters)

1. (Regional Dixieland vernacular, obsolete) Potato, or sweet potato root.