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

See Examples For:

unleaded

The average price of a gallon of unleaded has fallen 19.5 cents over the past week, to $4.256 a gallon on Monday morning.

From Barron's ● Jun. 1, 2026

The average price for regular unleaded gasoline fell 10% in April, partially reversing March’s 33% jump, the ABS added.

From The Wall Street Journal ● May 27, 2026

The average price of unleaded petrol has risen to 158.52p a litre, its highest level since the start of the Iran war, according to the RAC.

From BBC ● May 19, 2026

The average nationwide cost of one gallon of regular unleaded gasoline is roughly $4.50, compared with $3.14 a year ago, according to AAA.

From The Wall Street Journal ● May 12, 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)