LSJ
f.l. for προσ- in LXX 4 Ma. 15.2. Adv. -ρως prematurely, Gloss.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
prematurely
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars