"safest" in the adjective sense
1. safe
free from danger or the risk of harm
"a safe trip"
"you will be safe here"
"a safe place"
"a safe bet"
2. safe
of an undertaking) secure from risk
3. safe
having reached a base without being put out
"the runner was called safe when the baseman dropped the ball"
4. dependable, good, safe, secure
financially safe
"a good investment"
"a secure investment"
Source: WordNet® (An amazing lexical database of English)
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