expedient

Short definition from Wiktionary

Adjective

1. 1
   Suitable to effect some desired end or the purpose intended.
2. 2
   Affording short-term benefit, often at the expense of the long-term.
3. 3
   Governed by self-interest, often short-term self-interest.
4. 4
   Expeditious, quick, rapid.

Noun

1. 1
   A method or means for achieving a particular result, especially when direct or efficient; a resource.