IPA: /ˈkeɪˌækər/
KK: /ˈkeɪˌækər/
A person who uses a kayak for traveling on water, often for recreation or sport.
The kayaker paddled smoothly across the lake, enjoying the peaceful surroundings.
Kayaker → The word is formed from "kayak" (from the Greenlandic word *qajaq*, meaning a type of small boat) and "-er" (meaning a person who). A kayaker is a person who uses a kayak.
Think of someone who uses a small boat ('kayak') — the '-er' just means a person. A kayaker is someone who paddles in a kayak.