山やま猫ねこ争そう議ぎ

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Meanings

1

noun

A strike action undertaken by workers without the authorization of their union. The term is a direct translation of the English 'wildcat strike'.

mountain

争contend, dispute, argue

議deliberation, consultation, debate

ストライキ
A general term for a strike, often used for official, union-organized actions. 山猫争議 specifically refers to an unauthorized, spontaneous strike.
争そう議ぎ
A broader term for a labor dispute or industrial action, which can include strikes, lockouts, etc. 山猫争議 is a specific type of 争議.

Compound of 山猫 (wildcat) and 争議 (dispute, strike), calqued from English 'wildcat strike'.