How do you say in Turkish
You could have least said bye :P

whoops forgot to put the "at least " so you could have at least said bye x)

Question

How do you say in Turkish
You could have least said bye   :P

whoops forgot to put the "at least "  so you could have at least said bye   x)

Answer

you mean how to say "You could have at least said bye" in Turkish? Well you can say "En azından bir hoşçakal diyebilirdin." 
Here, 
bye means "hoşçakal" but you can use "güle güle" or "bay bay" too.

I hope it will help :)

edit: i've read it as there was "at least" it doesn't change, in fact.

Answer

u can use for "bye" =güle güle or hoşçakal, 
so you could have at least said bye=En azından hoşçakal diyebilirdin,

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