Search Result for "costless": 
Wordnet 3.0

ADJECTIVE (1)

1. costing nothing;
- Example: "complimentary tickets"
- Example: "free admission"
[syn: complimentary, costless, free, gratis(p), gratuitous]



The Collaborative International Dictionary of English v.0.48:

Costless \Cost"less\ (k?st"l?s; 115), a.
   Costing nothing.
   [1913 Webster]


WordNet (r) 3.0 (2006):

costless
    adj 1: costing nothing; "complimentary tickets"; "free
           admission" [syn: complimentary, costless, free,
           gratis(p), gratuitous]