(only in compounds, uncommon) diaper (absorbent garment worn by a baby)

(fandom slang) in fanwork, placing characters in a modern AU

algebra

(grammar) personal pronoun

(grammar) demonstrative pronoun

(politics, historical) a chief consul in the ancient Yamato court, equivalent to and replaced by 左大臣 (sadaijin) and 右大臣 (udaijin) during the Taika Reforms

forehead / title / question / issue

graduate school

important, significant / grave, solemn

modern times, variously described as after the 19th century, after World War I, or after World War II, until the present