整理 J 動詞や名詞の意味を広げる文法形式 教科書 p.96
The pattern expands the verb/noun meaning
接続：N・Vます remove ます・A + っぽい
seems / easy / full of substance. Oral language; just have many characteristics or easily fall into a state.
注意 / Note：Check the subject, tense and tone of both clauses; Avoid translating word for word from Vietnamese.
比較 / Compare：Compare with similar samples in the same article to choose according to nuance and connection. Same 課: 〜かける／〜かけだ／〜きる／〜通す／〜出す／〜やすい／〜にくい／〜づらい／〜すぎる／〜がちだ／〜らしい／〜のようだ／〜みたいだ／〜だらけだ — these models are often mistaken for each other, read the 接続 line carefully and then decide.
このスープは水っぽいです。
This soup is thin.
彼は忘れっぽいです。
That person is forgetful.
その服は子どもっぽいです。
That outfit looks childish.