To hide something or keep it secret so that other people cannot see or know about it.
From Latin 'concelere' combining 'con-' (together) and 'celere' (to hide). It entered English in the 13th century with the meaning of deliberately hiding something.
The word 'conceal' shares the same root as 'cell'—both involve the idea of something being enclosed or hidden away, which is why prisoners are placed in cells!
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