回（かい、kai）
- times

The Japanese word 回, pronounced かい (kai) in its most common reading, primarily signifies "times" or "occurrences". It's a counter used to quantify the number of times an action happens, an event occurs, or something is repeated. It can also refer to "round" or "inning" in sports or "turn" in a sequence. Furthermore, depending on the context, 回 can also represent "instance," "episode," or "session." The meaning of 回 is highly context-dependent, and its specific nuance shifts with the noun or verb it accompanies.

⚫︎一回 Translation: One time ⚫︎二回行きました。 Translation: I went twice. ⚫︎三回戦 Translation: Round three (in a competition)

⚫︎回 is used after a number to quantify actions or events. ⚫︎It's generally used when describing how many times something happens. For instance, when counting how many times you’ve eaten, watched a movie, or visited a place. ⚫︎Pay attention to the context. The specific meaning of 回 changes depending on what it's attached to. ⚫︎In sports, it can refer to an inning or round: 一回 (the first inning). ⚫︎In certain phrases, 回 is used differently, such as 今回は (this time) which focuses on an instance.

⚫︎The most common way to write 回 is using the kanji 回. ⚫︎The reading かい is the most common for the counter. ⚫︎It is typically written in hiragana as かい when paired with other Japanese words. ⚫︎There are no variations in okurigana for this usage of 回.

⚫︎度(do): Also means "times" or "degree", but it is used slightly differently. 度 often refers to the frequency of something, the extent, or the degree of something. ⚫︎度(tabi): Means "times" or "each time", used to emphasize the repetition of an event. ⚫︎度(kai): Means "times" or "occurrences", often used as a counter.

While there isn't a direct antonym for 回 in the sense of an opposite word, you could consider phrases that indicate "never" or "zero times": ⚫︎一度も～ない (ichido mo ~ nai): Not even once. ⚫︎一度も (ichido mo): Never.

私は映画を五回見ました。 ・Translation: I watched the movie five times. ・Explanation: In this sentence, 回 (kai) is used to count the number of times the action of watching a movie happened.

試合は九回まで行われました。 ・Translation: The game went until the ninth inning. ・Explanation: Here, 回 represents "inning" in the context of a baseball game, illustrating its use in sports terminology.

The kanji 回 originates from a pictograph depicting something that is turning or circling. It originally signified “to turn around” or “to revolve.” This meaning then evolved to encompass the concept of frequency and repetition, hence its usage as a counter for "times" or "occurrences". The character embodies the idea of a cycle or repetition. 回 itself is a pictograph of a whirlpool or something turning.