Except for şişman, these are new inventions as a result of language reform. But it´s actually an effort of imitating English -man suffix.

snowman, showman, salesman etc.

As for şişman, it may be another suffix for noun stems.

şiş-man

deliş-men

köle-men

koca-man

Türk-men

ata-man

etc.

The Suffix -MSI [-ımsı, -imsi, -umsu, ümsü ]

This suffix comes especially to the end of colors and gives them the meaning of  "likeness"

beyaz [white ] ----> beyazımsı [whitesh]

kırmızı [ red ] ------> kırmızımsı [ reddish ]

sarı   [yellow ] -----> sarımsı [ yellowish ]

siyah [black] -------> siyahımsı [ blackish ]

pembe [ pink ] ------> pembemsi [ pinky,pinkish]

yeşil [green] --------> yeşilimsi [greenish ]

mor [ purple ] -------> morumsu [ purpleish]

mavi [blue] ----------> mavimsi [ blueish ]

* The suffix -msı also comes to some other words to give them "likeness " "littleness " such as ;

acı [bitter,hot] -----> acımsı [ bitterish , bit bitter ]

tatlı [sweet] --------> tatlımsı [ sweetish , bit sweet ]

ekşi [sour] -----------> ekşimsi [ sourish ]

The suffix " leyin "

This suffix doesnt follow vowel harmony. It creates time adverbs from nouns.

Note ; this suffix doesnt apply for all time words [month,week..] !

Sabah [morning] ----> Sabahleyin [ in the morning ]

Öğlen [afternoon] ----> Öğlenleyin [ in the afternoon, at noon]

Akşam [ evening ] ----> Akşamleyin [ in the evening ]

Gece [ night ] ------> Geceleyin [ in the night , at night ]

The suffix -k [-ak,-ek]

This suffix turn many verbs into noun and adjective  forms.

FORMULA ;

VERB STEM + -k [-ak,-ek]

Korkmak = to fear -----> Korkak ----> coward

Dilemek = to wish -----> Dilek -------> wish

Kapamak = to close ----> Kapak -----> lid, cover

Yatmak = to sleep ------> Yatak -----> bed

-k and -ak/-ek are not the same suffix.

For example:

Dilek: Dile-k

and

Yatak: yat-ak

Yatık: yat-ık

Bileşik zamanlı formlar ve "ol" yardımcı fiili ;

[ Compound tense forms and the auxiliary "ol-" ]

Git   -    miş                  ol -  acağ  -   ız      ---> Gitmiş olacağız

Go   - informed past   be - Future  - person [we]

We   will   have gone

 ****************************************

Dinlen  -- iyor                   ol  -- malı  --- sınız   ---> Dinleniyor olmalısınız.

Rest   -- Cont.Tense      be -- neces. -- you [plural]

You must be resting.

****************************************

Bitir ---- miş                   ol ---- ur -------    sun  ------> Bitirmiş olursun.

Finish -- informed past     be ---Aorist tense-- Person [you]

You´ll have finished.

 -k comes when the verb stem ends with vowel [ Dile + k ]

-ak,ek comes when the verb stem ends with consonant [ Yat + ak, dön + ek ]

therefore they are same.

the suffixes "ık,ik,uk,ük "  are bit different, they make verb stem into more like adjectives.

the suffixes "ık,ik,uk,ük "  make verb stems into more like adjectives

bitmek = to finish    ----> bitik [exhausted,worn out]

yanmak = to burn   -----> yanık [ burnt ]

solmak = to fade  ------> soluk [ faded,pale ]

Nope! Nope! Nope!

Check a grammar book. Or if you say you have a grammar book and if it is telling what you say. Tell us its name. I´m curious.

My grammar book lists -ek and -(i)k separately.

They are not the same suffixes.

 Yep ! Yep ! Yep !

we are saying the same things...of course  -[e]k and [i]k, [ı]k, [u]k, [ü]k are listed seperately however -k [-[a]k,-[e]k] are same in that respect [its all to do with verb stem ending with vowel or consonant ]

Loving this break down of common suffixes I also am glad you think of helpful topics like this. I will be refering back to it alot I am sure. Could I request something as well? If you think its relavent, will you also explain the suffixes -erak/-arak which have to do with "gerunds of state" or something. Pretty please?