wife-phobia; fear of one's wife
A humorous or colloquial term for a husband's exaggerated fear of his wife, often used in light-hearted contexts.
彼は恐妻病で、妻の前ではいつも小さくなっている。
He has wife-phobia and always shrinks in front of his wife.
Compound of 恐 (fear), 妻 (wife), and 病 (illness), literally 'wife-fearing illness'. The exact origin is uncertain, but it is a modern coinage used humorously.