IPA: /ˈskʌlkər/
KK: /ˈskʌlkər/
A person who moves stealthily or secretly, often to avoid being seen or to do something sneaky.
The skulker hid behind the bushes, waiting for the right moment to strike.
Skulker originates from the verb 'skulk' (from Middle English *skulken*, meaning to lie in hiding) combined with the agent suffix '-er' (meaning a person who). A 'skulker' is therefore a person who lies in hiding or moves stealthily.
Think of someone who is 'hiding' ('skulk') and the '-er' indicating a person. This helps you remember that a 'skulker' is someone who hides or sneaks around.