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Sentence

彼かれはデートの妄もう想そうをどんどん膨ふくらませていた。

Span Details

デート

date with someone; outing for two; date night

noun, suru verb

possession, attribution, nominalizer, or nominal linker

妄もう想そう

delusion; wild fantasy; ridiculous idea

noun, suru verb

rapidly; steadily; one after another

膨ふくらま

swell; expand; bulge; inflate

-> 膨らむgodan verb

causative auxiliary

-> せる/させるgrammar

ongoing or resultant state

-> ているgrammar

past tense or completed action