Lexical Definition

‎βασανίζω‎ basanízō (bas-an-id'-zo) to torture: torture G:V
from ‎βάσανος‎

pain, toil, torment, toss, vex.

Usage: 6 forms in 8 verses
Form Translated As     In Verse(s)
ἐβασάνισαν tormented Rev.11.10
ἐβασάνιζεν was tormented 2Pet.2.8
βασανισθήσονται they will be tormented Rev.20.10
they will torment Rev.9.5
βασανισθήσεται he will be tormented Rev.14.10
βασανίσῃσ You may torment Luke.8.28
may torment Mark.5.7
βασανίσαι to torment Matt.8.29

Abbott-Smith

βασανίζω (< βάσανος), [in LXX: I Ki 5:3, Si 4:17, and freq. in Wi, II, IV Mac;]

1. prop., to rub on the touchstone, put to the test.
2. to examine by torture, hence, generally, to torture, torment, distress: Mt 8:6, 29 14:24, Mk 5:7 6:48, Lk 8:28, II Pe 2:8, Re 9:5 11:10 12:2 14:10 20:10.†

Abbott-Smith References

Book Refs
1 Samuel 5:3
Matthew 8:6 · 8:29 · 14:24
Mark 5:7 · 6:48
Luke 8:28
2 Peter 2:8
Revelation 9:5 · 11:10 · 12:2 · 14:10 · 20:10

Liddell-Scott-Jones

βασανίζω-ίζω,

Attic dialect future -ῐῶ[Refs 5th c.BC+]aorist ἐβασάνισα, subjunctive βασανίσω variant in [Refs] —passive, aorist ἐβασανίσθην: perfect βεβασάνισμαι:—rub upon the touch-stone (βάσανος), χρυσόν [Refs 5th c.BC+]: hence, put to the test, prove, [Refs 4th c.BC+]; investigate scientifically, [Refs 5th c.BC+] of the instances used in inductive inference, ἀπὸ τῶν πανταχόθεν βεβασανισμένων [μεταβαίνομεν] [Refs 1st c.BC+]

__II of persons, examine closely, cross-question, [Refs 5th c.BC+]; βεβασανισμένος εἰς δικαιοσύνην having his love of justice put to the test, [Refs 5th c.BC+]; ὑπὸ δακρύων βασανίζεσθαι, i.e. to be convicted of being painted by tears (washing off the cosmetic), [Refs 5th c.BC+]
__II.2 question by applying torture, torture, rack (see. βάσανοςIII), [Refs 5th c.BC+]:—passive, to be put to the torture, [Refs 5th c.BC+]; to be tortured by disease (censured by [NT+2nd c.AD+]; of animals, [Refs 2nd c.AD+]: metaphorically of the earth,[Refs]
__II.3 metaphorically of style, strain, [Refs 3rd c.AD+]forced, unnatural, [Refs 1st c.BC+]

LSJ Scripture Refs: Matt.8.6