本当 (ほんとう)truth; reality; actuality

truth; reality; actualitynoun (common) (futsuumeishi), nouns which may take the genitive case particle 'no'
proper; right; correctnouns which may take the genitive case particle 'no', adjectival nouns or quasi-adjectives (keiyodoshi)
genuine; authentic; realnouns which may take the genitive case particle 'no', adjectival nouns or quasi-adjectives (keiyodoshi)

本当, its kanji, and other words that share them.Open this graph

Kanji in 本当

基本きほんbasics; fundamentals
日本人にほんじんJapanese person; Japanese people
本社ほんしゃhead office; main office
本部ほんぶheadquarters; head office
日本語にほんごJapanese (language)
本人ほんにんthe person in question; the person themselves
本会議ほんかいぎplenary session; regular session
本塁打ほんるいだhome run
当初とうしょbeginning; start
当局とうきょくauthorities; relevant authorities
当時とうじat that time; in those days
当選とうせんbeing elected
当面とうめんcurrent; urgent
担当たんとうbeing in charge (of an area of responsibility); being responsible (for a work role, etc.)
当然とうぜんnatural; right
担当者たんとうしゃperson in charge (of an area of work); person responsible

See how 本当 connects to the rest of Japanese.