Roman soldiers used to be paid in salt. This is the origin of our present-day "salary". Someone who is "worth their salt" is someone who is worthwhile, useful or hard-working.
The expression is to be worth one's salt, not"worthy" of it. Salt was actually a form of payment ( cf "salary"). The expression means to earn one's keep.
I think it means "he's worth his salt". It's a fairly common phrase.
Yes it was the main currency hence the phrase worth its weight in salt or worth its salt.
The expression "he's not worth his salt" means that someone is not competent or valuable enough to justify their position or role. It implies that the person is not performing at the level expected of them.
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The term "halogen" means "salt-former".
True to salt means be loyal to someone or something. The following sentence explains its meaning. "The spy will not reveal the secret as he is true to his salt"
Salt rocks are worth money in places such as Timbuktu.
Part of people's Salary from working used to be salt because salt was valuable back then. So "Not to be worth your salt" would be another way of saying that you haven't done enough work to earn your salary. Hope this helped.
In the middle ages salt was very rare and valuable, so a person "worth their weight" was a person who was needed and valuable.
It just means the salt of the sea.
Yes. Salt contains the positive ion Na+ and the negative ion Cl-. That means it is a salt.