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In a sentence
Nemohol si nevšimnúť veľký nápis.
He could not fail to notice the large sign.
V tlači som si tej chyby nevšimol.
In the rush I did not notice that mistake.
Takmer si nevšimol, že odišla.
He almost did not notice that she had left.
Nevšimla si chybu v texte až do rána.
She did not notice the error in the text until morning.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.