Strong's G1582 — ἐκκρέμαμαι (verb)
ekkremamai (ek-krem'-am-ai) v.
1. to hang upon the lips of a speaker, i.e. listen closely
[middle voice from G1537 and G2910]
KJV: be very attentive 
Root(s): G1537, G2910 
Hebrew root: κρεμάννυμι
Occurrences: 1