Top Definition
The degree to which something is affiliated with or resembles Japan and its culture and people. Something with a high degree of japtitude would be very Japanese.

It comes from the word, "aptitude." And originated as a sort of pun between "Jap" and "aptitude."
"Anime, even if not made in Japan, has a very high degree of japtitude.
by Matthew Winnett July 02, 2007

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