Words that start with 'riv' and contain 'l'

What's the highest scoring word you can play in Scrabble ?
For 20 points in Scrabble, you can play 'rivalize'.

What is an interesting word from all the word combos available ?
You'll discover many weird words on this page, with that said our favorite word right now is 'rivel'. The definition of 'rivel' is as follows: "To contract into wrinkles; to shrivel; to shrink; as, riveled fruit; riveled flowers. [Obs.] Pope. "Riveled parchments." Walpole. A wrinkle; a rimple. [Obs.] Holland.".

Is there any word on this page that stands out as the most common?
The most well-known word in the dictionary is 'rival', which in fact is the 4233^rd most common word in the dictionary.

What is the max number of words you could create using this list?
There are 38 outstanding words for you to decide on.

How many characters are in the longest word from this list?
The word 'rivulariaceous' has 14 characters.