Translation

ただ一人の / ただ一つの / 単独の

Meaning

Lone means single or without others, often making the person or thing stand out. A lone traveler is alone; a lone tree is the only tree nearby. Do not confuse lone with loan, money that must be paid back.

Examples

• 丘の上に一本だけ木が立っていました。
  A lone tree stood on the hill.
• 彼女はその計画に反対したただ一人の委員でした。
  She was the lone committee member who opposed the plan.