One who corroborates; a person who confirms, supports, or provides evidence for something said or claimed by another.
From Latin 'corroborare' (to strengthen together) plus '-er' suffix for agent nouns, referring to someone who makes something stronger through confirmation.
In legal history, the 'corrober' became crucial to establishing truth—English courts developed elaborate systems requiring multiple corrobers to testify, establishing the principle that facts need independent confirmation.
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