Unpaid worker lacking energy is Russian? (4)
I believe the answer is:
slav
'russian?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'unpaid worker lacking energy' is the wordplay.
'unpaid worker' becomes 'slave' (I've seen this before).
'lacking' suggests deleting specific letters.
'energy' becomes 'e' (physics symbol as in E=mc2).
'slave' with 'e' removed is 'SLAV'.
'is' is the link.
Can you help me to learn more?
(Other definitions for slav that I've seen before include "Eastern European" , "European perhaps" , "One of the European people" , "Native of eastern Europe, perhaps" , "Person speaking one of related languages of Euro-Asian border" .)