The Homeric Greek word σθένος
Word σθένος
s tʰ e. n o ς
IPA stʰenos
Meaning strength, might
Synonyms ἀλκή, ἀλκί, δύναμις, κάρτος, κράτος, μένος, κῖκυς

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Iliad

Other words that might be of interest
ἀνάγκη ‘force, constraint, necessity’, ἀναγκάζω ‘force, compel’, βία ‘bodily strength, force’, ἐρωή ‘any quick motion, rush, force’