Definition:
δυσ- inseparable prefix, opposite to εὖ, like
un, mis- (in unrest, mischance), giving the idea of difficulty, opposition, injuriousness, etc. (
AS)
Definition:
δῠσ-, insepar. Prefix, opposed to εὖ, un, mis, with notion of hard, bad, unlucky, etc, as δυσήλιος, δύσαγνος; destroying the good sense of a word, or increasing its bad sense: hence, joined even to words expressing negation, as δυσάμμορος, δυσανάσχετο; poetry in strong contrasts, as Πάρις Δύσπαρις, γάμος δύσγαμος. Before στ, σθ, σπ, σφ, σχ, the final ς was omitted, see δυστ. (Cf. Sanskrit du[snull], dur, e.g. durmanās, ={δυσμενής}; ONorse tor, e.g. torsóttligr (δύσμαχος); OIr. du, do, e.g. dochruth 'misshapen'.)
Definition:
used only in composition as a prefix; hard, i.e. with difficulty; + hard, + grievous, etc; a primary inseparable particle of uncertain derivation