over one's head
To a position higher than another's, as in She was furious when her assistant was promoted over her head. Similarly, go over someone's head means “appeal to a higher authority,” as in Since she couldn't help me, I decided to go over her head and talk to her supervisor. [Mid-1500s]
Beyond one's understanding or competence, as in The math required to complete these figures is way over my head. [Early 1600s] For a synonym, see out of one's depth. Also see in deep (over one's head).
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Words nearby over one's head
Example sentences from the Web for over one's head
Added to drinking water at concentrations of around one part per million, fluoride ions stick to dental plaque.
In his view, a writer has only one duty: to be present in his books.
Yet this, in the end, is a book from which one emerges sad, gloomy, disenchanted, at least if we agree to take it seriously.
The fear of violence should not determine what one does or does not say.
The al Qaeda-linked gunmen shot back, but only managed to injure one officer before they were taken out.
Practise gliding in the form of inflection, or slide, from one extreme of pitch to another.Expressive Voice Culture|Jessie Eldridge Southwick
It is most peculiar, and when he plays that way, the most bewitching little expression comes over his face.Music-Study in Germany|Amy Fay
He alludes to it as one of their evil customs and used by them to produce insensibility.
Madame Ratignolle, more careful of her complexion, had twined a gauze veil about her head.The Awakening and Selected Short Stories|Kate Chopin
There was a rumor that Alessandro and his father had both died; but no one knew anything certainly.Ramona|Helen Hunt Jackson