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Peripheral

Yes, Peripheral is a valid word.

What does PERIPHERAL mean?

adjective
on or near an edge or constituting an outer boundary; the outer area
“Russia's peripheral provinces”
adjective
related to the key issue but not of central importance
“a peripheral interest”
noun
electronic equipment external to the circuit board that contains the CPU of a computer
“disk drives and printers are important peripherals”

Definitions from WordNet 3.1, Princeton University.

Scrabble

Words With Friends

Letters

Single letters that turn PERIPHERAL into another valid word in Scrabble US (TWL). Hooks are how you play onto a word already on the board.

None — nothing can be added to the front.

The 60 highest-scoring words using these letters.

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