i Register
In some senses, misken is marked as UK. Watch for register when choosing this word.
verb
To mistake one for another; mistake in point of knowledge or recognition; misconceive.
To fail to know; be ignorant or unaware of; appear to be ignorant of.
To misunderstand; mistake; have the wrong idea of.
To esteem oneself incorrectly; have a false or exaggerated opinion of oneself or one's position.
To fail to recognise or identify.