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'Lie' means to tell an untruth, or to be in a horizontal position; 'lye' is a strongly alkaline solution used in soapmaking and cleaning.
Side-by-side comparison
"Lie" has two distinct meanings: to recline (past tense: "lay") or to say something untrue. Both are spelled the same.
He lied about his qualifications on the application and was dismissed when discovered.
She lies down for twenty minutes after lunch, it helps her afternoon productivity.
The truth always surfaces eventually, no lie can be sustained indefinitely.
"Lye" is a caustic chemical substance used in soap-making and industry. It has nothing to do with the verb "lie".
Traditional cold-process soap is made by combining lye with oils or fats.
Lye must be handled with protective gloves and eyewear, it causes severe burns.
Pretzels get their distinctive chewy crust from being dipped in a lye solution before baking.
Common mistake
- •"He told a lye" when meaning a falsehood is wrong (correct: lie).
- •"Lye" is the alkaline solution (sodium hydroxide), a technical term from chemistry and soapmaking.
Trick to remember it
- •"Lie" ends in E like "true" or "false", and a lie is the opposite of true.
- •"Lye" has Y like "alkali" and "chemistry": a scientific substance.
Quick rule
- •Is it to tell a falsehood or to recline? "Lie".
- •Is it the alkaline solution? "Lye".
Did you know?
Nixtamalisation, soaking maize in lye solution, was invented 3,500 years ago in Mesoamerica. This process unlocks niacin (vitamin B3) from maize, making it nutritionally far more valuable. European populations who adopted corn without nixtamalisation developed pellagra (niacin deficiency). German pretzels are dipped in lye solution before baking, the alkali reacts with heat to produce their distinctive shiny brown crust and chewy texture. Traditional cold-process soapmaking still uses lye: a controlled saponification reaction converts fat into soap and glycerine. The lye itself is not present in finished soap, it is completely consumed in the chemical reaction.
Practise what you learned
Exercise 1 · Pick the right one
She could tell he was telling a _____ from the way he avoided eye contact.
Exercise 2 · Pick the right one
Traditional soap was made using animal fat and _____.
Exercise 3 · Form the word
Related word pairs
One means to receive or agree to something, the other means to exclude or not include.
'Advice' is the guidance you receive (noun); 'advise' is the act of giving that guidance (verb).
'Affect' is the verb meaning to influence something; 'effect' is the noun meaning result or consequence.
'Aisle' is the walkway between rows of seats or shelves; 'isle' is a small island.
Bryan López
Founder of SpeakUP Academy