assistant, sub-, vice-, auxiliary, supplemental

assistant / sub- / deputy / vice-

old documents / (in palaeography) historical documents written to convey a specific intention between a sender and receiver; generally inclusive of written material through the mid-19th century

bizarre/unsettling text of unclear origin and often of a radical/shocking nature

place or building where stores public records; archive

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

a vice president (of a country)