Incorrect spelling, explanation: open is a two-syllable word with the accent on the first syllable and one vowel preceding the last syllable. In such words, we don’t double the last consonant. This is the reason openned is the wrong form as there shouldn’t be double n. Opened is the correct spelling.

Correct spelling, explanation: the rule states, that a word containing two syllables with one vowel before the last syllable, we double the last consonant if the accent falls on the last syllable, and we don’t double it with the accent on the first syllable. This means that when creating the past form of the word open we don’t double the n and the correct form is opened and not openned.

Definition of opened:
1. verb (past simple/past participle form of “open”), to move an object so it allows to pass through, for example, door, to get access
I opened the website but some features didn’t work.
2. adjective, in the state of being unlocked
Leave the window opened, it’s so hot today.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling