קָהָה qâhâh

Meaning

to be dull

In the King James Version: be set on edge, be blunt.

Derivation: a primitive root;

Where it is used

• Ecclesiastes 10:10 If the axe is dull and the blade unsharpened, more strength must be exerted, but skill produces success.
• Jeremiah 31:29 “In those days, it will no longer be said: ‘The fathers have eaten sour grapes, and the teeth of the children are set on edge.’
• Jeremiah 31:30 Instead, each will die for his own iniquity. If anyone eats the sour grapes, his own teeth will be set on edge.
• Ezekiel 18:2 “What do you people mean by quoting this proverb about the land of Israel: ‘The fathers have eaten sour grapes, and the teeth of the children are set on edge’?