ὀκνηρόςoknērós

tardy, i.e. indolent; (figuratively) irksome

Greek (New Testament) · G3636

Meanings

shrinking, hesitating, timid: with dative (Bl., § 38, 2), Romans 12:11; hence, slothful: Matthew 25:26. Of things, that which causes shrinking, irksome: Philippians 3:1.

Same root

ὀκνέωoknéō · G3635to be slow (figuratively, loath)

Where it appears

Appears 3 times in the Bible.

Matthew 25:26 “But the master replied, ‘You wicked and lazy servant! If you knew I harvested crops I didn’t plant and gathered crops I didn’t cultivate,
Romans 12:11 Never be lazy, but work hard and serve the Lord enthusiastically.
Philippians 3:1 Whatever happens, my dear brothers and sisters, rejoice in the Lord. I never get tired of telling you these things, and I do it to safeguard your faith.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.