preffixes is a part of word to create a new word that has different meanings
The word you are looking for is a root word. Prefixes can be added to a root word to create related words with different meanings.
pre- un- dis- in- ex- non- quasi- re- de- uni-
The prefixes for the word "appalling" are "ap" and "ap·pall·ing".
A complete list of such words would be over 100,000 words. Hat has no roots or affixes. Neither does chair, and thousands of other words. Do you actually know what roots and affixes are?
Prefixes: un-, re-, mis-, dis- Suffixes: -able, -tion, -ing, -less Split words: un-happy, re-active, mis-understand, dis-appear, comfort-able, inform-ation, runn-ing, care-less, rebuild-ing, pre-heat.