Wordnet 3.0
ADVERB (1)
1. 
 in place of, or as an alternative to; 
- Example: "Felix became a herpetologist instead"- Example: "alternatively we could buy a used car"[syn: alternatively, instead, or else]
WordNet (r) 3.0 (2006):
or else
    adv 1: in place of, or as an alternative to; "Felix became a
           herpetologist instead"; "alternatively we could buy a
           used car" [syn: alternatively, instead, or else]