丸っきり
Common
Adverb
1
adverb (fukushi)
word usually written using kana alone
completely;absolutely;totally;(not) at all
See also:
丸きり (まるきり)
おもってたのとまるっきり違いますねえ。
It's really different from what I expected.
Other forms
丸っ切り 【まるっきり】 (rarely used kanji form)