Familiar beat (5)
I believe the answer is:
tired
This might be a double definition.
'familiar' is the first definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'beat' is the second definition.
(similar in meaning)
Can you help me to learn more?
(Other definitions for tired that I've seen before include "getting bored" , "Worn out" , "Exhausted" , "Beat" , "knackered" .)