Quote (unhatchedxegg @ Sun, Oct 12 2008, 05:07pm)
what's the hiragana(or katakana?) for the verb
practice? i don't trust those online translators

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it's usually expressed in kanji and hiragana - "練習する",
or "れんしゅうする" in full hiragana.
if you mean the pronunciation of "practice" in japanese, it's "プラクティス" in katakana.