General "shadow"
* Aka: This is a common word for "shadow," though it can also mean "shade" or "darkness."
* Loko: This translates to "shadow" in some contexts, but it can also mean "place" or "location."
Figurative or metaphorical "shadow"
* Aka o ka mea: This literally means "shadow of the thing" and can be used to refer to a shadow that is cast by something.
* Aka o ka po: This means "shadow of the night" and can be used to refer to a dark shadow or a feeling of obscurity.
* Kahiakahi: This means "dim" or "faint" and can be used to refer to a faint shadow.
The best translation will depend on the specific situation and the meaning you want to convey.