GRC
Bailly
ἐννεα·καί·δεκα [ᾰᾰ] n. de n. indécl. dix-neuf, IL. 24, 496 ; THCR. Idyl. 15, 129, etc. ; ATT.
Bailly 2020 Hugo Chávez Gérard Gréco, André Charbonnet, Mark De Wilde, Bernard Maréchal & contributeurs / Licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Pas de Modification — « CC BY-NC-ND 4.0 »
LSJ
indecl., nineteen, Il. 24.496, etc.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
neunzehn, Hom. u. Folgde.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)
TBESG
indeclinable nineteen , (Iliad by Homer), etc. (ML)
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