[1] The headword is future participle of sumfe/rw, neuter nominative/accusative singular. Same glossing (with the present participle) in the Synagoge and Photius; and cf. sigma 1652, tau 806. It might be extracted from either of the quotations given here, though the other lexica do not have them, and there are numerous other instances, beginning with Demosthenes 4.51.
[2] Part of Menander Protector fr. 12.5 Blockley (134-135), Baian's envoys address Roman general Bonus (cf. alpha 3252) outside Sirmium (cf. sigma 477) during the Avar siege the city in 568. On the Avar khan Baian, see generally alpha 209 note. On the Avars, see alpha 18 generally. See further extracts from this fragment at alpha 3252, epsilon 2178, and epsilon 3875.
[3] cf. epsilon 2154.
[4] Agathias, Histories 5.21, on the young Byzantine military commander Germanus; cf. Frendo (157), alpha 2461, alpha 3435, alpha 4595, omicron 782, pi 1522, pi 2901, and tau 881.