Boastful game? (4)
I believe the answer is:
brag
This clue might be a double definition.
'boastful' is the first definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?
'game?' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for brag that I've seen before include "game, making > boast" , "'Show off, boast (4)'" , "Blow one's own trumpet" , "Show off, crow" , "Card game - boast" .)