This is the 4387th most frequent Turkish word.
acıyı
The Turkish word "acıyı" means "the pain" or "the suffering" (accusative form).
Here, "acıyı" is used as "the pain," specifically in its accusative form to denote the object of feeling.
Acıyı hissetmek zordur.
Feeling the pain is difficult.
In this sentence, "acıyı" refers to "the spice" with a hot flavor, and is in accusative form as the object of the verb "use."
Acıyı baharat olarak kullanmayı severim.
I like using the spice as seasoning.
"Acıyı" again means "the pain" and is used in accusative form as the object of the verb "forget."