### Clue: One left in a lot of murkiness, being lazy? (6)
### Answer: IDLING 
 ### Explanation: Definition: being lazy
 I(Roman numeral for "one") + [ L(abbrev. for "left") **contained in**(in) **all, but last, letters of**(a lot of …) "dinge"(dinginess/murkiness/not having enough light)].