keyless
key
ˈki:
ki
less
lɪs
lis
treeless

Definition & Meaning of "keyless"in English

keyless
01

of something that does not require a physical key for operation 

Grammatical Information
Composition
Compound
relational
ungradable
Examples
The keyless ignition in modern cars lets you start the engine with a push of a button. 
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