Words with 'pen' at the start and 's' at the end

What's the biggest word you can create using the combination searched for?
The longest word is 19 characters long, which is 'penecontemporaneous'.

Is there any word on this page that stands out as the most common?
A common word for the combination you requested is 'penalties'.

What word from this page is the most unusual?
The most unusual word based on a recently conducted poll is 'pentamerous'. It means "1. (Biol.) Divided into, or consisting of, five parts; also, arranged in sets, with five parts in each set, as a flower with five sepals, five petals, five, or twice five, stamens, and five pistils. 2. (Zoöl.) Belonging to the Pentamera.".

What's the maximum number of words you are able to make using this list?
On this page of words that start with 'pen' and end with 's', you have 131 entries that can be selected.

What's the highest scoring word you can play in Scrabble ?
With a considerable 131 entries, we'd suggest choosing 'penoches' scoring 15 points.