14 baby names with a similar sound and feel to Ostap.
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"sparrow (possible derivation of the name Sequoyah)"
"lion"
"bright raven"
"famous raven"
"rough clearing or rough woodland clearing"
"defender of men"
"the Passover festival"
"Sun; throne - from Old Persian Kurush meaning one who bestows care"
"time, era, eternity"
"Beautiful; lovely"
"brave, daring"
"rosemary (when short for Rosemary)"