Alone

1. имя прилагательное; предикатив 1) единственный, один, одинокий, одиночный 2) без посторонней помощи, сам, в одиночку Например: The boy can do it alone. — Мальчик может это сделать без посторонней помощи. alone Например: to let / leave somebody alone — оставить кого-либо в покое, не тревожить кого-либо to let something alone — не трогать что-либо, не прикасаться к чему-либо, оставить что-либо в покое let alone — не говоря уже о 2. наречие 1) исключительно, единственно, только 2) одиноко, в одиночестве

Большой англо-русский словарь

Alone

I. adjective Etymology: Middle English, from al all + one one 1. separated from others ; isolated 2. exclusive of anyone or anything else ; only
Example: she alone knows why 3. a. considered without reference to any other
Example: the children alone would eat that much b. incomparable, unique
Example: alone among their contemporaries in this respectaloneness noun Synonyms: alone, solitary, lonely, lonesome, lone, forlorn, desolate mean isolated from others. alone stresses the objective fact of being by oneself with slighter notion of emotional involvement than most of the remaining terms
Example: everyone needs to be alone sometimes. solitary may indicate isolation as a chosen course
Example: glorying in the calm of her solitary life but more often it suggests sadness and a sense of loss
Example: left solitary by the death of his wife. lonely adds to solitary a suggestion of longing for companionship
Example: felt lonely and forsaken. lonesome heightens the suggestion of sadness and poignancy
Example: an only child often leads a lonesome life. lone may replace lonely or lonesome but typically is as objective as alone
Example: a lone robin pecking at the lawn. forlorn stresses dejection, woe, and listlessness at separation from one held dear
Example: a forlorn lost child. desolate implies inconsolable grief at loss or bereavement
Example: desolate after her brother's death. II. adverb 1. solely, exclusively
Example: the blame is his alone 2. without aid or support
Example: said he could do it alone

Энциклопедический словарь Мерриама-Вебстера