さいだい
biggest, largest
The most big there is, which is about as plain as a superlative gets. The same sigh さい, and the same die だい as 大体. That is the biggest ship afloat: さいだい.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.