熟つくずくCommonVariants熟つくずく熟々つくずく熟熟つくずく熟つくつく熟々つくつく熟熟つくつく熟つくづく熟々つくづく熟熟つくづくMeaningsintently; carefully; closely; attentivelydeeply; keenly; severely; completely; utterlyKanji used熟acquire skill