Lexical Definition

‎συναπόλλυμι‎ synapóllymi (soon-ap-ol'-loo-mee) to die/destroy with G:V
from ‎σύν‎ and ‎ἀπόλλυμι‎

perish with.

Usage: 5 forms in 7 verses
Form Translated As     In Verse(s)
συναπώλετο did perish with Heb.11.31
συναπόλησθε be destroyed together LXX.Num.16.26
συναπόλη should LXX.Gen.19.15
συναπολέσησ destroy me together LXX.Ps.28.3
destroy together LXX.Gen.18.23LXX.Ps.26.9
συναπολέση be destroyed together with LXX.Deut.29.19

Abbott-Smith

συν-απ-όλλυμι [in LXX chiefly forספה;]
to destroy with or together. Pass., to perish together (with): c. dat. pers., He 11:31.†

Abbott-Smith References

Book Refs
Hebrews 11:31

Liddell-Scott-Jones

συναπόλλυμι,

destroy together, μετά τινος [Refs 5th c.BC+]; σ. τοὺς φίλους destroy one's friends as well as oneself, [Refs 5th c.BC+]; σ. τὰ Χρήματα lose the money also, [Refs 4th c.BC+]; τινί τι one thing with another, [Refs 1st c.AD+]:—passive, perish together, [NT+5th c.BC+]

LSJ Scripture Refs: Heb.11.31