This week's theme: some words with "some" in them.

toilsome

Meaning:
laborious and tiring.

Forms:
toilsomeness (noun)
toilsomely (adverb)

Example:
"The construction of a bridge is toilsome but interesting as well as dangerous since it involves conquering and bringing under control the invincible forces of nature." - Poushali Ganguly; "Famous Bridges of the World", www.buzzle.com; Dec. 27, 2007.