台詞（せりふ、serifu）
- line (in a play)

The Japanese word 台詞（せりふ, serifu) primarily refers to the lines or dialogue spoken by characters in a play, movie, television show, or any other form of performance. It can also refer to the words someone says, particularly in a specific context like a speech or a statement. 台詞 focuses on the spoken words, as opposed to actions or stage directions. It encompasses the entirety of the text spoken by a character.

⚫︎あの俳優の台詞回しは素晴らしい。 Translation: That actor's delivery of lines is wonderful. ⚫︎映画の台詞を全部覚えてしまった。 Translation: I memorized all of the movie's lines. ⚫︎彼女の台詞は短くて印象的だった。 Translation: Her lines were short and impressive.

⚫︎台詞 is used when discussing the spoken words in a performance or any situation where speech is the main focus. ⚫︎It's common when analyzing a play, movie, or any scripted performance. ⚫︎You can use it to describe the quality of the lines, the way they're delivered, or to talk about individual lines. ⚫︎It's also used to talk about someone’s statement. For example, "What were his 台詞s?"

⚫︎台詞 is written using the kanji 台（dai, meaning "stand" or "platform," though in this context, it has a more general meaning) and 詞（shi, meaning "words" or "speech"). ⚫︎The reading is せりふ（serifu) in hiragana. ⚫︎There is no variation in the okurigana. ⚫︎It's almost always written as 台詞 in kanji. The hiragana せりふ is used for reading aids or when the kanji might be considered too formal. ⚫︎Sometimes it is written with 台詞s in plural.

⚫︎セリフ（serifu): This is the katakana version, used mainly for emphasis or when writing in a more casual style. This is identical to 台詞. ⚫︎言葉（kotoba): Meaning "words" in general, this is a broader term and not specific to dialogue. ⚫︎言い回し（iimawashi): Refers more specifically to "wording" or "phrasing". ⚫︎せりふ- This is 台詞 itself, written in hiragana. ⚫︎口上（koujou)- Often refers to a formal speech or address.

⚫︎There isn't a direct antonym. You might consider concepts that contrast with spoken words, such as silence or actions.

その劇の台詞はとても感動的だった。 ・Translation: The lines in that play were very moving. ・Explanation: This sentence uses 台詞 to describe the dialogue of a play, emphasizing its emotional impact on the audience.

彼は台詞を忘れてしまった。 ・Translation: He forgot his lines. ・Explanation: This sentence describes the situation of an actor forgetting his dialogue.

The word 台詞 is derived from the combination of 台 and 詞. 台 likely refers to the "stage" or the "platform" where the words are presented and 詞 denotes the "words" themselves.