The system by which words are constructed out of letters is
Morphology
The smallest meaningful unit of a morphological system is known as a
morpheme
Morphemes may appear by themselves as coherent words, but they may be combined with other morphemes to form more ________ words.
complex
the morpheme -s it utilized with other morphemes to create
plural words
morpheme boy and -s for boys.
What language is notorious for exceptions to its morphological system?
English