Apart from another or others; single or singly; solitary or solitarily; without the aid or company of another: applied to a person or thing: as, to be or remain alone; to walk alone.Only; to the exclusion of other persons or things; sole or solely: as, he alone remained.Without a parallel; above or beyond all others; unique.Devoid; destitute.In each of these examples only would now be considered better, though not alone for not only is in common use. Alone means unaccompanied: as, he stood alone. Only applies to that of which there is no other: as, an only son; adverbially, only this.