でかい
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Base i-adjective form ending in 『い』. Used informally to describe something very large in size or scale.
Theme
User and their coworker Taro are at a construction site, commenting on the size of a new building.
でかい
でかい
huge
Core Language Building BlocksDescriptive Language
Memory Hook
Imagine a giant, 'decaying' (でかい sounds like 'decay') but huge monster — it's so huge it's decaying from its own size! 'Decay' → でかい (dekai, 'huge').
Cultural Note
『でかい』 (dekai) is a casual, often masculine-sounding adjective used in everyday speech to describe something impressively large, like a big meal or a tall person. It's common in anime and manga for exaggerated expressions.
Forms
Base: でかいBase i-adjective form ending in 『い』. Used informally to describe something very large in size or scale.
Negative: でかくないDrop 『い』 → add 『くない』 (kunai, negative) → 『でかくない』 (dekakunai).
Past: でかかったDrop 『い』 → add 『かった』 (katta, past) → 『でかかった』 (dekakatta).
Adverbial: でかくDrop 『い』 → add 『く』 (ku, adverbial) → 『でかく』 (dekaku).
Comparative: よりでかいComparative formed with modifier 『より』 (yori, 'more than') + base adjective.
Superlative: 一番でかいSuperlative formed with 『一番』 (ichiban, 'number one / Most') + adjective.