get it into your thick head
mainly UK US usually get it through your thick head to make someone understand something, especially when you have told them many times before and are annoyed:
How can I get it into your thick head that it’s dangerous to swim that far out in the sea?
Thesaurus: synonyms and related words
Difficult to understand
- (as) clear as mud idiom
- abstruse
- ambiguity
- ambiguous
- arcane
- blurred
- diffuse
- equivocal
- esoteric
- fathomless
- garble
- impalpable
- obscure
- opaque
- over your head idiom
- paradox
- puzzler
- puzzling
- recherché
- veiled
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You can also find related words, phrases, and synonyms in the topics:
Understanding and comprehending
Stupid and silly