Theory of Meaning Derivational and Inflectional Theory
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Besides  rightmost  morpheme  theory,  there  is  compounding  theory.  The contribution of this theory is answering the first problem formulation which is about
the exocentric compounding that the writer  found.  Exocentric  compounding itself  is produced from two words which are exist and have different meaning and the gather
together and  become  exocentric  compounding.  It  has  only a  part  of  speech  and  one meaning from those two words.
Then  there  is  morphological  operation  theory  that  is  divided  into  two  main types:  inflection  and  derivation.  The  contribution  of  this  theory  helps the  writer  to
classify  those  words  that  have  double  morpheme.  Inflection  does  not  change  the syntactic  category  of  the  words,  while  derivation  causes  a  change  in  syntactic
category of the words Spencer, 1991: 9. There is also tree diagram theory. This approach helps the reader to define the
head of the exocentric compounding and it can be useful to define the inflected words or even the derivation words.
The  last  one  from  morphology  is  derivational  and  inflectional  theory.  This theory helps the writer to conclude whether the word is an inflectional or derivational
word, because there are some words that have double morpheme. The  second  theory  is  theory  of  meaning.  The  contribution  of  this  theory  is
helping the writer to conclude the exocentric and endocentric meaning of each word. It  does  not  depend  only  on  the  electronic  dictionary,  but  this  theory  helps  enough.
Concluding the part of speech also use this theory, which is this word is a noun or an adjective or a verb.
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In  the  theory  of  meaning,  there  is endocentric  and  exocentric  theory.  These theories are used to differentiate between endocentric and exocentric meaning in each
word that the writer found in this undergraduate thesis. The third  theory is  the  theory  of  the  writing  in  exocentric  compounding.  This
approach tells the reader that compounds are not consistent since they are written as single words, or with an intervening hyphen, or as separate word sometimes. There is
an important  generalization to  be made in  terms  of pronunciation Anastasya, 2013: 1.
Then  thereis  English  orthography  theory  which  is  divided  into  two  parts; prominent stress,  and tense and  plural markers. This  theory’s contribution  is to help
the reader to conclude that it is an adjective- noun A- N compounds. This theory is answering the problem formulation of number two about morphological process. By
knowing the prominent stress and tense and plural markers, the reader knows how to divide the morphological process in some exocentric compounding words.