fugitive

Short definition from Wiktionary

Noun

1. 1
   A person who flees or escapes and travels secretly from place to place, and sometimes using disguises and aliases to conceal their identity, as to avoid law authorities in order to avoid an arrest or prosecution, or to avoid some other unwanted situation.

Adjective

1. 1
   Fleeing or running away; escaping.
2. 2
   Transient, fleeting or ephemeral.
3. 3
   Elusive or difficult to retain.

Verb

1. 1
   To render someone a fugitive; to drive into escape or exile.