Question

Unacceptable bound morpheme

Answer 1

HEY FRIEND ANSWER IS. .......

Morphemes that can stand alone to function as words are called free morphemes. They comprise simple words (i.e. words made up of one free morpheme) and compound words (i.e. words made up of two free morphemes).

Examples:

Simple words: the, run, on, well

Compound words: keyboard, greenhouse, bloodshed, smartphone


Morphemes that can only be attached to another part of a word (cannot stand alone) are called bound morphemes.

Examples:

pre-, dis-, in-, un-, -ful, -able, -ment, -ly, -ise

pretest, discontent, intolerable, receive


Complex words are words that are made up of both free morpheme(s) and bound morpheme(s), or two or more bound morphemes.

Roll your mouse over the words below to see how many morphemes are there and whether they are free morphemes or bound morphemes.

Answer 2

A morpheme is the smallest part of a word like prefixes, suffixes, etc. and a bound morpheme is a morpheme that can not stand by itself. That is to say, a bound morpheme is dependent on another morpheme to make a word. 
In the word 'unacceptable', 'un-' is a suffix that adds meaning to the word but can not stand by itself. 
Thus, 'un-' is the bound morpheme.