ultrasafe
adjective
ul·tra·safe ˌəl-trə-ˈsāf 
: extremely or extraordinarily safe, secure, or protected
an ultrasafe car
an ultrasafe investment
Word History
First Known Use
1898, in the meaning defined above
ultrasafe
adjective
as in safe
Synonyms & Similar Words
Relevance
- safe
- beneficial
- harmless
- nonhazardous
- innocuous
- unthreatening
- advantageous
- innocent
- nonthreatening
- good
Antonyms & Near Antonyms
- dangerous
- hazardous
- unsafe
- risky
- serious
- threatening
- unhealthy
- perilous
- menacing
- grave
- treacherous
- insecure
- grievous
- uncertain
- venturesome
- precarious
- jeopardizing
- parlous
- dicey
- ultrahazardous