山やまほど

adverb, noun

lots of; a ton of; a mountain of

Emphasizes a very large amount, often used in casual speech. Can function as an adverb or noun.

• やることが山やまほどある。

  I have a ton of things to do.

• 彼かれは山やまほどの本ほんを持もっている。

  He has piles of books.