How many morphemes are in the word unconstitutional?

Here's how to break down the morphemes in "unconstitutional":

* un-: This is a prefix meaning "not" or "opposite of".

* constitution: This is the base word, meaning "the basic principles and laws of a nation, state, or organization."

* -al: This is a suffix meaning "relating to" or "of the nature of."

Therefore, "unconstitutional" has three morphemes: un-, constitution, and -al.