Autological

Autological words are self classifying, self describing, or self defining.

I first came across this wonderful concept from Gödel, Escher, Bach by Douglas Hofstadter.

Wiktionary has an appendix dedicated to this, and Henry Segerman has an exhaustive (exhausting?) collection.

Here's my favorites. Can you think of any others?

abbr.
adjectival
aforementioned
antonym?
awkwardnessfull
bland
boring
buzzword
classifiable
cliché
coined
common
complete prefixed
comprehensible
concept
describable
descriptive
eroneous
existant
fifteen-lettered
finite
glottal
grandiloquent
harmless?
hissing
heterological
iamb
intelligible
invented
lingo
meme
mispelt 🙂
nasal
nonpalindromic
noun
olde
one
password – (based on empirical evidence)
pentasyllabic
perfussive
plain
plosive
pronouncable
quaint?
readable
repeatable
sdrawkcab
short
silibant
thing
translatable
understandable
understood
unfinish
unique
verb?
vwllss
whole
word
writable
zig-zag