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Synonyms for Understanding (same or very similar meaning)

WordNet sense 1 (the statement (oral or written) of an exchange of promises):

WordNet sense 2 (an inclination to support or be loyal to or to agree with an opinion):

WordNet sense 3 (the cognitive condition of someone who understands):
apprehension, discernment, savvy

WordNet sense 4 (the capacity for rational thought or inference or discrimination):
intellect, reason

WordNet sense 5 (having the ability to perceive or understand; keen in discernment):

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