すんなり
sunnari

Suru Verb
To-Adverb

1. slim; slender; lithe; supple

Onomatopoeia
Suru Verb
To-Adverb

2. smoothly; without resistance; without trouble; without difficulty; without dissent; easily; readily

Onomatopoeia
スーザンは かしこいから試験 しけんにすんなり とうると おもうよ。
sūzanwa kashikoikara shikenni sunnari tōruto omōyo.
Susan is intelligent, and I expect her to pass the exam easily.