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to go away from a place or person
He left his hometown to find a job.
He went away from his hometown to look for work.
Can be used intransitively (without an object) or transitively (with an object).
to allow someone or something to remain in a particular state
Please leave the door open.
Please allow the door to remain open.
Often used in instructions or requests.
to depart from a place, especially permanently or for a significant period
She left her job to start her own business.
She departed from her job to begin her own company.
Can imply a significant change or transition.
Remember that the past tense of 'leave' is 'left', not 'leaved'.
'Leave' can be used both with and without an object. For example, 'She left' (intransitive) and 'She left her keys' (transitive).
Old English 'læfan', from Proto-Germanic 'laibijaną', meaning 'to allow to remain'. Related to Old High German 'leib' (body) and Old Norse 'leifa' (to allow).
The past tense and past participle of 'leave' is 'left'. The verb can be both transitive and intransitive.