鼻はな先さき思じ案あん

also: はなさきしあん

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Meanings

1

superficial thinking; shortsighted idea

yojijukugo (four-character idiom)

Refers to a shallow, ill-considered plan or way of thinking that only looks at what is immediately in front of one's nose. Often used critically.

彼かれの提てい案あんは鼻はな先さき思案じあんで、長ちょう期き的てきな視し点てんが欠かけている。
His proposal is shortsighted and lacks a long-term perspective.
そんな鼻はな先さき思案じあんでは、大おおきな問もん題だいは解かい決けつできない。
With such superficial thinking, you can't solve big problems.