What does 内心 mean?
内心 is a Japanese noun meaning “innermost thoughts, real intention” in English. It can also be translated as “at heart, inner center (centre)” depending on context. It is written as 内心 in kanji, ないしん in hiragana, and naishin in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
政治家は決して内心を見せない。
Politicians never tell us their inner thoughts.