Shirabe

戸惑うとまどう

Common Godan Intransitive
English jmdict
1
Godan verb with 'u' endingintransitive verb to be bewildered;to be perplexed
しかし、どうしてそうなるのかについては私は説明にとまどう。
But how that comes about I am at a loss to explain.
Other forms 途惑う 【とまどう】 (rarely used kanji form)