Loth to tackle anything not lined out (8)
I believe the answer is:
indolent
'loth to tackle anything' is the definition.
I can't tell whether this defines the answer.
'not lined out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'not'+'lined'='notlined'
'notlined' with letters rearranged gives 'INDOLENT'.
Can you help me to learn more?
(Other definitions for indolent that I've seen before include "Lazy, disinclined to work" , "Lazy, slothful" , "Making no effort" , "Disinclined to exertion or work" , "Work-shy" .)