Abbott-Smith Manual Greek Lexicon
δή (G1211)
6 δή consecutive co-ordinating particle with no exact equiv. in Eng., giving greater exactness and emphasis to the word or words to which it is attached; sometimes translatable as now therefore, then, verily, certainly . With verbs: imperat., Ac 6:3 (WH, mg.) 13:2 , I Co 6:20 ; hort. subjc., Lk 2:15 , Ac 15:36 ; indic., δή που (T, δήπου , q.v.), He 2:16 . With pronouns: ὃ δή , now this is he who , Mt 13:23 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain