This article is from the Puzzles FAQ, by Chris Cole chris@questrel.questrel.com and Matthew Daly mwdaly@pobox.com with numerous contributions by others.
What words, when a single letter is added, reverse their meanings?
Exclude words that are obtained by adding an "a-" to the beginning.
language/english/synonyms/antonym.s
e: fast -> feast, fiancee -> fiance
h: treat -> threat
r: fiend -> friend
s: he -> she
t: here -> there
 
Continue to: