Thıs may seem lıke a very stupid questıon to ask, but I am having some trouble in understanding the phrase of thank you. How does teşekkür-ler break down? What suffix is the -ler? is it just the plural form of thank, so teşekkür-ler lıterally means "thank-s." Would teşekkürler be consıdered the formal/informal, or the more polite way to say thank you (thanks) to someone verses another way. The other ways that I have come across to express this is: teşekkür ederim. Thank you. teşekkür etmek /a/ to thank (someone). This makes more sense the the teşekkürler (thanks) because their is an auxiliary verb. So is this way more polite/ formal than the other way. But how does this way break down? the auxilary verb of etmek in the dictionary is "to do, make." So teşekkür ederim literaly means I do thanks to you. If this is the case then shouldn't it be teşekkür-ler ederim.