Vocabulary Form
ἀπόλλυμι
Definition

active: I destroy, kill;
middle: I perish, die

Erasmian
Modern
Root
ἀπολ
Frequency
90
GK
660
Forms
ἀπολέσω or ἀπολῶ, ἀπώλεσα, ἀπολώλεκα or ἀπόλωλα, -, -
Cognates

Apollyon, from =Apolluvwn, is the destroying angel in Rev 9:11.

Notes

The stem of this verb is *ολ. It belongs to a class of verbs that add ν to the root to form the present tense stem, but the ν assimilates to a λ (cf. MBG, #13 and p. 309). *ολνυ → ολλυ →  ὄλλυμι. This is why there is a single λ in the other tenses.

Because ἀπόλλυμι is a compound verb, the α does not augment, but the ο does.

In the present tense this verb follows the athematic conjugation (chapter 34). In the other tenses it follows the thematic conjugation we have been learning so far. You can see this in how it forms its other tense forms.

Biblical Concordance

James 1:11 For the sun rises with its scorching heat and withers the meadow; its flower falls and its beauty fades (apōleto | ἀπώλετο | aor mid ind 3 sg). In the same way the rich man will fade away while pursuing his business.
James 4:12 There is only one who is the lawgiver and judge — the one who is able to save and to destroy (apolesai | ἀπολέσαι | aor act inf ); so who are you to be judging your neighbor?
1 Peter 1:7 so that the genuineness of your faith (which is more precious than gold that perishes) (apollymenou | ἀπολλυμένου | pres mid ptcp gen sg neut), having been tested by fire, may be found to your praise and glory and honor at the revelation of Jesus Christ.
2 Peter 3:6 By these the world of that time was (apōleto | ἀπώλετο | aor mid ind 3 sg) destroyed (apōleto | ἀπώλετο | aor mid ind 3 sg), being deluged with water.
2 Peter 3:9 The Lord is not late in fulfilling his promise, as some regard lateness, but is patient toward you, not willing that anyone should perish (apolesthai | ἀπολέσθαι | aor mid inf ), but that all should come to repentance.
2 John 1:8 Be on your guard, so that we (apolesēte | ἀπολέσητε | aor act subj 2 pl) may (apolesēte | ἀπολέσητε | aor act subj 2 pl) not lose (apolesēte | ἀπολέσητε | aor act subj 2 pl) the things we worked for but may receive a full reward.
Jude 1:5 Now I want to remind you, though you once knew all this, that the Lord, having saved his people out of Egypt, afterward destroyed (apōlesen | ἀπώλεσεν | aor act ind 3 sg) those who did not believe.
Jude 1:11 Woe to them! For they take the way of Cain, and abandon themselves to the error of Balaam for the sake of gain, and perish (apōlonto | ἀπώλοντο | aor mid ind 3 pl) in the rebellion of Korah.
Revelation 18:14 “The fruit that your soul longed for has gone from you, and all your delicacies and splendid things are lost (apōleto | ἀπώλετο | aor mid ind 3 sg) to you, never to be found again!”