Is tracing it hard work for genealogists? (6)
I believe the answer is:
strain
'work for genealogists?' is the definition.
'strain' can be an answer for 'work' (thesaurus). I am not certain of the 'for genealogists?' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for strain that I've seen before include "Muscle injury, put liquid through sieve" , "Tension and exertion" , "Stress or make taut" , "Weaken -- sieve" , "Try too hard" .)