Yes. PI is a valid word.
PI is valid in the North American word list used for the Scrabble board game and other crossword tile games.
PI is in the NASPA Word List 2023 (NWL2023), the North American list that Tileside uses for challenges and the one used in club and tournament play.
About PI
PI is the sixteenth letter of the Greek alphabet and the number of times a circle's diameter fits around it. It is a handy spot for the 3-point P.
Settle the next one at the table: score your game free in Tileside →
PI scores 4 points
Before any bonus squares: P 3 + I 1 = 4. On a double-word square that's 8, on a triple-word 12, and every letter bonus under one of these tiles is applied first.
Example: PI as the first play
Later in the game, put the P on a 3L square and PI is worth 10 before any word bonus.
Hooks: one tile makes a new word
After PI (10):
- PIAperennial herb of East Indies to Polynesia and Australia
- PICa form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
- PIEdish baked in pastry-lined pan often with a pastry top
- PIGdomestic swine
- PINto hold fast or prevent from moving
- PIPa disease of poultry
- PISform of PI: the ratio of the circumference to the diameter of a circle
- PITa sizeable hole (usually in the ground)
Place that one tile so it also forms a word in the other direction and both words score.
Longer words from PI
Other forms of PI (5):
Words that start with PI:
- PIAL
- PIAN
- PIASform of PIA: perennial herb of East Indies to Polynesia and Australia
- PICAan eating disorder, frequent in children, in which non-nutritional objects are eaten persistently
- PICE
- PICKselect carefully from a group
- PICSform of PIC: a form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
- PIERa platform built out from the shore into the water and supported by piles
Change one tile
Swap any one letter of PI and these are still words:
Same letters, other words
No other word in the list uses exactly the letters P and I.
Add one tile: words from these letters plus one more
PI + A
- PIAperennial herb of East Indies to Polynesia and Australia
PI + C
- PICa form of entertainment that enacts a story by sound and a sequence of images giving the illusion of continuous movement
PI + D
- DIPimmerse briefly into a liquid so as to wet, coat, or saturate
PI + E
- PIEdish baked in pastry-lined pan often with a pastry top
PI + G
- PIGdomestic swine
PI + H
PI + K
- KIPsleep
PI + L
- LIPeither of two fleshy folds of tissue that surround the mouth and play a role in speaking
PI + M
- IMP(folklore) fairies that are somewhat mischievous
Memory tip
PI is the Greek letter used for 3.14159…, the one from every math class. PIA, PIC, PIE, PIG, PIN, PIP, PIS, PIT and PIU hook off the end.
On these lists
Other two-letter words starting with P
Check words at the table, free
Tileside keeps score, checks words like this one during a challenge, tracks the tiles left in the bag and times turns. It runs in your phone's browser with no account and works offline.
Tileside checks words against the North American list, the NASPA Word List 2023. Your group's chosen dictionary always wins. Playing the international (Collins) list? Turn on its 20 extra two-letter words in Setup.
Word list: NASPA Word List 2023, used under license. NASPA Word List 2023 Edition © NASPA 2023. The copy included in this app is licensed for personal use. You may not use it for any commercial purposes.
Works with the Scrabble board game, played at the table. Tileside is an independent product, not affiliated with or endorsed by the makers of Scrabble.