Adult and Gamy

Adult adjective - Relating to or typical of adults; displaying proper maturity.

Gamy and adult are semantically related. (North American) In some cases you can use "Gamy" instead an adjective "Adult". informal substitute

Gamy adjective - Hinting at or intended to call to mind matters regarded as indecent.

Adult and gamy are semantically related. Sometimes you can replace term "Adult" with "Gamy", this adjectives are similar.