- separate, apart, or isolated from others: I want to be alone.
- to the exclusion of all others or all else: One cannot live by bread alone.
- unique; unequaled; unparalleled: He is alone among his peers in devotion to duty.
- solitarily; solo: She prefers to live alone.
- only; exclusively: You alone hold the key to your happiness.
- without aid or help: The baby let go of the side of the crib and stood alone.
- leave1 (def. 18).
- to be satisfied with the existing situation; refrain from attempting to change conditions: Marriages are often destroyed by relatives who will not let well enough alone.
- let1 (def. 16).
- apart from another or others; solitary
- without anyone or anything else
- without equal; unique
- to the exclusion of others; only
- to refrain from annoying or interfering with
- to refrain from interfering with something that is satisfactory
- much less; not to mention