This is the 2115th most frequent Turkish word.
açık
Open; clear; obvious.
The word "açık" in this sentence is used as an adjective meaning "open."
Kapı açık, lütfen içeriyi havalandıralım.
The door is open, let's air out the inside.
In this sentence, "açık" is an adjective that means "clear" or "straightforward."
Bu konu hakkında açık ve net olmalıyız.
We need to be clear and straightforward about this topic.
Here, "açık" is used as an adjective to mean "light" in reference to colors.