Pusillanimous means cowardly, fainthearted, or showing a contemptible lack of courage. It is a formal, elevated word—not something most people use in everyday casual conversation. Merriam-Webster notes that it suggests a particularly contemptible lack of courage, while Cambridge gives the simpler definition “weak and cowardly.”

The word also has a very literal etymological image behind it: Etymonline traces it to Late Latin pusillanimis, meaning “having little courage,” from elements meaning little and spirit/courage.

✅ The committee’s response was pusillanimous and ineffective.
Here, pusillanimous suggests not just fear, but a shameful lack of courage.

✅ He was too pusillanimous to challenge the decision.
This matches Cambridge’s definition of someone who is too weak or fearful to take risks or stand up to opposition.

✅ She wasn’t shy—she was pusillanimous when real pressure appeared.
This shows that the word is about lack of courage, not simple introversion.

❌ Don’t be so pusillanimous, mate.
✅ Don’t be such a coward, mate.
In everyday speech, pusillanimous often sounds too literary or exaggerated.

The most common mistake is using pusillanimous as if it were just a fancy synonym for quiet, nervous, or shy.

It usually means something stronger than that.

It works best when you mean:

Another common mistake is using it in casual conversation where it sounds unnaturally formal. This is the kind of word that fits better in:

Think of pusillanimous as:

not just afraid — disgracefully lacking courage

A simple memory trick:

pusillanimous = little spirit

That etymology is actually close to the historical meaning: Etymonline traces it to roots meaning little plus spirit/courage.

If timid feels too mild and cowardly feels too plain, pusillanimous is the more formal, high-level version.