4642 sklērós – properly, hard (because dried out); (figuratively) stiff, stubborn (unyielding) describing people who "won't budge" (bend, submit), or what is unyieldingly harsh.

STRONGS NT 4642: σκληρός

σκληρός, σκληρά, σκληρόν (σκέλλω, σκληναι, (to dry up, be dry)), from (Hesiod, Theognis), Pindar, Aeschylus down; the Sept. for קָשֶׁה, hard, harsh, rough, stiff (τά σκληρά καί τά μαλακά, Xen) mem. 3, 10, 1); of men, metaphorically, harsh, stern, hard: Matthew 25:24 (1 Samuel 25:3; Isaiah 19:4; Isaiah 48:4; many examples from secular authors are given by Passow, under the word, 2 b.; (Liddell and Scott, under the word, II. 2; especially Trench, § xiv.)); of things: ἄνεμος, violent, rough, James 3:4; ὁ λόγος, offensive and intolerable, John 6:60, equivalent to ὅς σκανδαλίζει, 61; σκληρά λαλεῖν κατά τίνος, to speak hard and bitter things against one, Jude 1:15 (σκληρά λαλεῖν τίνι is also used of one who speaks roughly, Genesis 42:7, 30; ἀποκρίνεσθαι σκληρά, to reply with threats, 1 Kings 12:13); σκληρόν ἐστι followed by an infinitive, it is dangerous, turns out badly (A. V. it is hard), Acts 9:5 Rec.; .



fierce, hard.

From the base of skelos; dry, i.e. Hard or tough (figuratively, harsh, severe) -- fierce, hard.

see GREEK skelos

σκληρά σκληράς σκληροί σκληροίς σκληρον σκληρόν Σκληρος Σκληρός σκληρὸς σκληρότεροί σκληρώ σκληρων σκληρών σκληρῶν skleron sklerón sklerôn sklēron sklērón sklērōn sklērō̂n Skleros Sklerós skleròs Sklēros Sklērós sklēròs