Search Result for "riskless": 
Wordnet 3.0

ADJECTIVE (1)

1. thought to be devoid of risk;
[syn: risk-free, riskless, unhazardous]



WordNet (r) 3.0 (2006):

riskless
    adj 1: thought to be devoid of risk [syn: risk-free,
           riskless, unhazardous]