Microsoft Word diachronic and synchronic view of word structure. Morphemes and allomorphemes

hat, believe, cheap, talk, red, new, cow, deliver, legal, etc.
Note that all free morphemes are words, but not all words are morphemes.
Bound morphemes are the units that cannot stand alone. On their own, they have no meaning. It always has to be added to other morphemes to give a meaning. The underlined parts in the following words are bound morphemes.
Hats
Disbelieve
Cheaply
Talked
Reddish
Bound Morphemes can be further divided into two categories called derivational and inflectional morphemes. Derivational morpheme is a morpheme that is added to the (the base form) of the word to derive a new word.
Example 1:
Danger в Dangerous
Beauty в Beautiful
Example 2:
Visible в invisible
Believe в Disbelieve
Derivational morphemes often change the word class of a word. (as in example 1)
Even if the word class remains unchanged, the meaning of the word will undergo a significant difference. (as in example 2)
In contrast, inflectional morphemes do not cause a change in the meaning or word class, they merely serve as grammatical markers. They indicate some grammatical information about a word.
Danced -Past Tense
Vans - Plural
Raining - Progressive
Morpheme





Root

Affixes





Derivational
Morpheme

Inflectional
Morpheme


Allomorph is a variant form of a morpheme. It can be simply described as a unit of meaning that varies in sound without changing its meaning