Abbott-Smith Manual Greek Lexicon
δυσ- (G1418)
0 (KJV) δυσ- inseparable prefix, opp. to εὖ , like un-, mis- (in unrest, mischance ), giving the idea of difficulty, opposition, injuriousness, etc.
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain