Only

Words referring to only a particular number or amount of people or things: no more than one, or no more than a particular number or amount.

• What words describe the only person or thing?
  only sole the one lone solitary alone one and only single
• What words indicate that there is only a particular number or amount of something?
  only just no more than all
• What words indicate something is true of only one thing or one group of things, and not true of others?
  only just exclusively nothing but nothing else be limited to be restricted to be confined to be unique to be peculiar to exclusive
• What words indicate that something is only what you say it is, and not something more?
  only just purely merely mere nothing but