The construction workers had to perform their jobs with preform molds. This might sound confusing to most, especially when the spell checker on your computer constantly wants to change “preform” to “perform” as if “preform” is not a word.

However, in the debate of “preform” vs. “perform” or “preforming” vs. “performing,” we’re ready to clear up the confusion.

Preform vs. Perform at a Glance

• Preform can be both a verb and a noun. As a verb, it means to shape something beforehand. As a noun, it refers to an object that is shaped or formed before it’s finished.
• Perform is both a transitive and intransitive verb, meaning to stick to the terms of something or carry out an action.

When To Use Preform

The word “preform” comes from the Latin term “praeformare,” which means “to pre-shape” or “to pre-form.” It refers to shaping something before it becomes its final form or can be the object that will later be shaped or formed. “Preform” isn’t a word you hear often in everyday conversation. However, it is common to hear the term in construction work. 

As a verb, “preform” means shaping or forming something ahead of time, like when a pattern is preformed. As a noun, “preform” refers to the object before it’s shaped or formed, like resin or concrete.

“Preform” can also be used as an adjective to describe something else, like a preformed mold or when contacting a preform mold supplier.

Preform Examples

• We use a preformed mold to create the product. (verb)
• Do not forget to turn the preformed metal in the forge so it heats evenly. (noun)
• The artist contacted a preform mold supplier to see if they carried the mold she needed for her newest project. (adjective)

When To Use Perform

The word “perform” originates from the Old French word “parfurmer,” which means to accomplish or complete.

Today, “perform” has many different meanings depending on the context of the sentence.

• To put on a show
• To complete a specific task 
• To fulfill the responsibilities of a job or social role
• To work properly or function well

Perform Examples

• Scruffy Kittens performed their hit song “Meow Mix” at the outdoor festival. (Scruffy Kittens put on a show.)
• The oncologist will perform the surgery in the morning. (The oncologist will complete the surgery.)
• Sarah got fired because she did not perform well in her job. (Sarah did not fulfill her job duties.)
• The old Buick performs pretty well in the cold weather! (The car runs well.)

Mnemonic Device for Preform and Perform

When you consider preform vs. perform, think about what you are discussing and use this easy mnemonic device:

• Perform (Play): Remember, “perform” starts with “per,” like “performance.” If you’re talking about acting in a play or carrying out an action, use “perform.”
• Preform (Prepare): Think about how “preform” starts with “pre,” like “prepare.” If you’re talking about shaping something before it’s finished (like in the preparation stage), use “preform.”

Preform vs. Perform: Don’t Let One Letter Throw You Off Stage

The English language can be tricky to understand, but GrammarMill has you covered. Check out our Commonly Confused Words resource that explains the differences between similar terms and gives you the tips and tricks you need to end this word confusion today!