| Word root/ prefix | Root Meaning | Words based on the Root |
| Pre | earlier, before, in front of | Preamble - a part in front of a formal document Prepare - to get ready in advance Prediction - a statement foretelling the future. |
| Proto | primitive, first, chief | Prototype - the first of a kind Proton - on of the very basic parts of an atom Protocol - a first draft from which a document is prepared. |
| Pseud/o | wrong, false | Pseudonym - a fictitious name Pseudoscience - theories presumed without proof of a scientific nature Pseudopregnancy - a false pregnancy. |
| Psych/o | mind, mental | Psyche - the human spirit or soul Psychic - relating to the human mind or someone who has supernatural mental abilities Psychology - the study of the mind. |
| Pugn /a, pung | to fight | Pugnacious - having a quarrelsome or aggressive nature Repugnant - distasteful, offensive or revolting Pungent - piercing. |
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