verb
To acquire mentally
To find out
learn, as considered here, implies a finding out of something, often without conscious effort I learned of their marriage from a friend; ascertain implies a finding out with certainty, as by careful inquiry, experimentation, or research I ascertained the firm's credit rating; determine stresses intention to establish the facts exactly, often so as to settle something in doubt to determine the exact denotation of a word; discover implies a finding out, either by chance or by exploration or study, of something already existing or known to others to discover a star, to discover a plot; unearth, in its figurative sense, implies a bringing to light, as by diligent search, of something that has been concealed, lost, or forgotten to unearth old documents, to unearth a secret
See learn in Webster's New World Roget's A-Z Thesaurus II
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