milquetoast

Definition from Wiktionary, the free dictionary

I found this word in an article on the internet describing what someone ‘wasn't'. I had never seen this word in print before - I must read more. Of course, I had to look up the meaning:
meek, timid
a person of meek or timid disposition
From the character Caspar Milquetoast of the comic strip The Timid Soul, created by Harold Webster and first published in 1924.
The character's name is a deliberate misspelling of the name of a bland and fairly inoffensive food, milk toast. Milk toast, light and easy to digest, is an appropriate food for someone with a weak or "nervous" stomach. Because of the popularity of Webster's character, the term milquetoast came into general usage in American English to mean "weak and ineffectual" or "plain and unadventurous." When the term is used to describe a person, it typically indicates someone of an unusually meek, bland, soft or submissive nature, who is easily overlooked, written off, and who may also appear overly sensitive, timid, indecisive or cowardly.
For the first half of the 20th Century Harold Tucker Webster was a popular cartoonist who didn't change his style with the times. His later drawings seem stuck in an earlier era, but that only added to the charm. The character, Caspar Milquetoast, was Webster's most popular, and lives on by name as a man who lacks courage. We all know a Caspar Milquetoast. Sometimes Webster used subtlety, as in the drawing where the census taker asks, "Are you the head of the household?" Caspar's sidelong glance at his wife tells us all we need to know.