frisky (adj.)youdaoicibaDictYouDict
"gaily active," c. 1500, from Middle English adjective frisk "lively" (see frisk (v.) + -y (2). Related: Friskiness.
risky (adj.)youdaoicibaDictYouDict
1825, from risk (n.) + -y (2). Riskful in same sense is from 1793. Related: Riskiness.