1: νωθρός
(Strong's #3576 — Adjective — nothros — no-thros' )

"indolent, sluggish," is rendered "slothful" in Hebrews 6:12 , AV, See DULL , and synonymous words there, and SLUGGISH.

2: Νινευίτης
(Strong's #3536 — Noun Masculine — okneros — nin-yoo-ee'-tace )

"shrinking, irksome," is translated "slothful" in Matthew 25:26 , and Romans 12:11 , where "in diligence not slothful," RV, might be rendered "not flagging in zeal." See GRIEVOUS , Note (2).