Unknowable is one. UN and ABLE.
Yes, these are called "prefix-bound" or "suffix-bound" words. They are words that alter their pronunciation when combined with a prefix or suffix.
Some words don't have prefixes or suffixes, those words are called root words. Sign, is a root word.
Ful is not a prefix. Some words with the suffix -ful are fanciful, mouthful, hateful, beautiful, etc.
Ation is not a prefix; it is a suffix. Some words with this suffix are specialization, aggravation, and alternation.
There are many words with both a suffix and a prefix. Here is one: unacceptable.
Prefixes: Converse can be added as a prefix to words such as conversation, conversion, or controversial. Suffixes: Converse can be added as a suffix to words like diverse, perverse, or traverse.
Words start with a prefix and end with a suffix.
It doesn't currently, but you could add the prefix up- or the suffix -ed to make the words "upsurge" and "surged."
None. Words end with a suffix.
This is not a prefix, but a suffix. Biology, geology, zoology, are just some of the words with ology. This means the "study of" in latin.
Prefix a group of letters that come at the beginning of a word root the basic part of a word the prefixes and suffixes are added to it suffix a group of letters that come at the end of a word some words are just root words meaning they don't have a prefix or a suffix
Or is not a prefix it is a suffix. Perhaps what was meant was ortho. Orthodontist, orthodox, orthopedic are few words with this.