If, by add you mean concatenate, the answer is Yes.
For example, a semihemidemisemiquaver (1/128 of a quaver).
Some prefixes you can add to the word "Caution" are "pre-" (precaution), "mis-" (miscaution), and "re-" (recaution).
Dex is not a word.
distrusted mistrusted
Un- and re- are two prefixes for "do."
Prefixes and suffixes in like a name like a person
No, you cannot add prefixes to polyatomic ions. Polyatomic ions are groups of bonded atoms that carry a charge and have specific names that are used in chemical nomenclature. These names do not require prefixes to indicate the number of atoms present.
hymnal
af, un
Prefixes for code:decoderecode
surface
You could make reasonable reasonably.
Two prefixes that mean "cut" or "cut out" are "dis-" and "ab-".