indefinite

Short definition from Wiktionary

Adjective

1. 1
   Without limit; forever, or until further notice; not definite.
2. 2
   Vague or unclear.
3. 3
   Undecided or uncertain.
4. 4
   Being an integral without specified limits.
5. 5
   Designating an unspecified or unidentified person or thing or group of persons or things.

Noun

1. 1
   A word or phrase that designates an unspecified or unidentified person or thing or group of persons or things.