Brave face the worker put on it (7)
I believe the answer is:
gallant
'brave' is the definition.
(similar in meaning)
'the worker put on it' is the wordplay.
'the worker' becomes 'ant' (worker is a type of ant).
'put on' means one lot of letters go next to another.
'it' becomes 'gall' (I can't justify this - if you can you should give a lot more credence to this answer).
'ant' put after 'gall' is 'GALLANT'.
'face' acts as a link.
Can you help me to learn more?
(Other definitions for gallant that I've seen before include "Brave and chivalrous like knight of old" , "Charmingly attentive to ladies" , "Brave and honourable" , "Brave, heroic" , "Noble, chivalrous" .)