知る

Etymology
From, from.

Verb

 * 1) to know, be aware of
 * 2) to learn, acquire,
 * 3) to be acquainted with, to know (someone)
 * 4)  to care in the least about, to be concerned with,
 * 1) to be acquainted with, to know (someone)
 * 2)  to care in the least about, to be concerned with,
 * 1) to be acquainted with, to know (someone)
 * 2)  to care in the least about, to be concerned with,

Usage notes
When constructing this verb's affirmative present form, the construction is used, as in. However, as an irregularity, when forming its negative present form, the negative form of the construction is not, as would be expected,, and instead becomes. Thus, extra care must be exercised when using this term.

This term is contrasted by, which is used for anything that involves conscious or continuous knowledge, while is used for general facts. For example, the phrase

would mean "I am acquainted with Japanese" or "I know what the Japanese language is". When saying "I know (have acquired) Japanese"

is used instead.