IPA: /ˈsloʊθfəl.nəs/
KK: /ˈsloʊθfəl/
The state of being lazy or slow to act; a lack of effort or activity.
His slothfulness prevented him from completing his work on time.
Slothfulness is formed from "sloth" (from Old English "slæwð", meaning laziness or idleness) and "-fulness" (meaning the state of being full of). The word describes the state of being full of sloth or laziness.
Think of 'sloth' as representing laziness, and '-fulness' indicating a state of being. This helps you remember that 'slothfulness' means the state of being lazy.