Milquetoast (noun)

A timid, unassertive and easily dominated person.

Origin:

Derived from the comic strip character caspar milquetoast, a meek, timid and unassertive man. the term refers to a person who is timid, unassertive and easily dominated.

Examples:

1. He was such a milquetoast that he always did what his boss told him to do.
2. She was tired of dating milquetoasts and wanted someone who would stand up for himself.
3. His milquetoast attitude made it easy for his coworkers to take advantage of him.
4. He was determined not to be a milquetoast anymore and began to assert himself in meetings.
5. The new employee's milquetoast behavior made it difficult for him to fit in with the team.