Editing Turkish language (section)

=== Word formation ===
Turkish extensively uses [[agglutination]] to [[Word formation|form new words]] from nouns and verbal stems. The majority of Turkish words originate from the application of derivative suffixes to a relatively small set of core vocabulary.<ref name=":13">{{Cite book|title=Turkish: A Comprehensive Grammar|last1=Goksel|first1=Asli|last2=Kerslake|first2=Celia|publisher=Routledge|year=2005|isbn=0-415-11494-2|pages=43–48}}</ref>

Turkish obeys certain principles when it comes to suffixation. Most suffixes in Turkish will have more than one form, depending on the vowels and consonants in the root- vowel harmony rules will apply; consonant-initial suffixes will follow the voiced/ voiceless character of the consonant in the final unit of the root; and in the case of vowel-initial suffixes an additional consonant may be inserted if the root ends in a vowel, or the suffix may lose its initial vowel. There is also a prescribed order of affixation of suffixes- as a rule of thumb, derivative suffixes precede inflectional suffixes which are followed by [[clitic]]s, as can be seen in the example set of words derived from a substantive root below:
{| class="wikitable"
|-
!Turkish
!Components
!English
!Word class
|-
|''göz''
|''göz''
|eye
|Noun
|-
|''gözlük''
|''göz + -lük''
|eyeglasses
|Noun
|-
|''gözlükçü''
|''göz + -lük + -çü''
|optician
|Noun
|-
|''gözlükçülük''
|''göz + -lük + -çü + -lük''
|optician's trade
|Noun
|-
|''gözlem''
|''göz + -lem''
|observation
|Noun
|-
|''gözlemci''
|''göz + -lem + -ci''
|observer
|Noun
|-
|''gözle-''
|''göz + -le''
|observe
|Verb (order)
|-
|''gözlemek''
|''göz + -le + -mek''
|to observe
|Verb (infinitive)
|-
|''gözetlemek''
|''göz + -et + -le + -mek''
|to peep
|Verb (infinitive)
|}

Another example, starting from a verbal root:

{| class="wikitable"
|-
!Turkish
!Components
!English
!Word class
|-
|''yat-''
|''yat-''
|lie down
|Verb (order)
|-
|''yatmak''
|''yat-mak''
|to lie down
|Verb (infinitive)
|-
|''yatık''
|''yat- + -(ı)k''
|leaning
|Adjective
|-
|''yatak''
|''yat- + -ak''
|bed, place to sleep
|Noun
|-
|''yatay''
|''yat- + -ay''
|horizontal
|Adjective
|-
|''yatkın''
|''yat- + -gın''
|inclined to; stale (from lying too long)
|Adjective
|-
|''yatır-''
|''yat- + -(ı)r-''
|lay down
|Verb (order)
|-
|''yatırmak''
|''yat- + -(ı)r-mak''
|to lay down something/someone
|Verb (infinitive)
|-
|''yatırım''
|''yat- + -(ı)r- + -(ı)m''
|laying down; deposit, investment
|Noun
|-
|''yatırımcı''
|''yat- + -(ı)r- + -(ı)m + -cı''
|depositor, investor
|Noun
|}

New words are also frequently formed by [[Compound (linguistics)|compounding]] two existing words into a new one, as in German. Compounds can be of two types- bare and {{lang|tr|(s)I}}. The bare compounds, both nouns and adjectives are effectively two words juxtaposed without the addition of suffixes for example the word for girlfriend {{lang|tr|kızarkadaş}} ({{lang|tr|kız+arkadaş}}) or black pepper {{lang|tr|karabiber}} ({{lang|tr|kara+biber}}). A few examples of compound words are given below:

{| class="wikitable"
|-
!Turkish
!English
!Constituent words
!Literal meaning
|-
|''pazartesi''
|Monday
|''pazar'' ("Sunday") and ''ertesi'' ("after")
|after Sunday
|-
|''bilgisayar''
|computer
|''bilgi'' ("information") and ''say-'' ("to count")
|information counter
|-
|''gökdelen''
|skyscraper
|''gök'' ("sky") and ''del-'' ("to pierce")
|sky piercer
|-
|''başparmak''
|thumb
|''baş'' ("prime") and ''parmak'' ("finger")
|primary finger
|-
|''önyargı''
|prejudice
|''ön'' ("before") and ''yargı'' ("splitting; judgement")
|fore-judging
|}
However, the majority of compound words in Turkish are {{lang|tr|(s)I}} compounds, which means that the second word will be marked by the 3rd person possessive suffix. A few such examples are given in the table below (note [[vowel harmony]]):
{| class="wikitable"
!Turkish
!English
!Constituent words
!Possessive Suffix
|-
|''el çantası''
|handbag
|''el'' (hand) and ''çanta'' (bag)
|'''''+sı'''''
|-
|''masa örtüsü''
|tablecloth
|''masa'' (table) and ''örtü'' (cover)
|'''''+sü'''''
|-
|''çay bardağı''
|tea glass
|''çay'' (tea) and ''bardak'' (glass)
|'''''+ı''''' (the k changes to ğ)
|}