lone

lacking companions or companionship; "he was alone when we met him"; "she is alone much of the time"; "the lone skier on the mountain"; "a lonely fisherman stood on a tuft of gravel"; "a lonely soul"; "a solitary traveler"

प्रमाणपत्र अकेला संदेश है, प्रमाणपत्र आयातित किया गया और जांच किया गया

A lone voice of protest. A lone passenger.