Bitter, abusive criticism

His diatribe about not liking the policy was hurtful to those listening.

Payment demanded in return for the release of a person or property

The kidnappers wanted a ransom before they would return the child.

To be present throughout; to spread into an area

The negative attitude pervaded the entire room.

Work together on a project

The teacher asked three students to collaborate on the project.

To act accordingly to a request or command

Even though we don't want to, we will comply with the request you made.

secretly; sneakily

He surreptitiously entered the room, hoping his mom would not notice.

Able to be eaten; tasty

We thought the new food she served was quite palatable.  We were afraid we would not like it.

a suggested plan

Her proposition regarding how to get the room decorated for the party was quite a good one.

Praise

We would like to commend you for your hard work and dedication.

Offensively disrespectful

The impudent child scolded his mother in front of everyone in the room.