unleaded

American  

[uhn-led-id] / ʌnˈlɛd ɪd /

adjective

1. (of gasoline) containing no tetraethyllead; lead-free.

2. Printing. not separated or spaced with leads, as lines of type or printed matter.

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noun

1. an unleaded product, especially gasoline that contains no tetraethyllead.

unleaded British  

/ ʌnˈlɛdɪd /

adjective

1. (of petrol) containing a reduced amount of tetraethyl lead, in order to reduce environmental pollution

2. not covered or weighted with lead

3. printing (of lines of type, etc) not spaced or separated with leads; solid

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noun

1. petrol containing a reduced amount of tetraethyl lead

Etymology

Origin of unleaded

First recorded in 1605–15; un- ¹ + lead ² + -ed ³

Example Sentences

According to motoring firm the RAC, the average price of unleaded petrol reached 152.52p a litre on Monday, the highest since the start of the war.

From BBC • May 20, 2026

Regular unleaded gas prices around the country are now averaging $4.50 a gallon, according to AAA.

From Barron's • May 12, 2026

The average national price for a gallon of regular unleaded gas was at $4.42 late Friday morning, according to GasBuddy.

From MarketWatch • May 1, 2026

But Williams said that the increase has slowed down, and we "shouldn't see unleaded rise any further for the time being and the record diesel price now shouldn't be surpassed".

From BBC • Apr. 13, 2026

This is what Collingwood read as he sat, coffee-cup in one hand, newspaper in the other—staring at the lines of unleaded type:

From The Talleyrand Maxim by Fletcher, J. S. (Joseph Smith)