The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PERIODONTAL
Definition of PERIODONTAL
adjective
surrounding a tooth
Wiktionary · CC BY-SA
Where it comes from
From Ancient Greek περί (perí, “around”) + ὀδούς (odoús, “a tooth”).
Etymology via Wiktionary (CC BY-SA).
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
PERIODONTAL in OUTLIER
Players have found it on 28 boards so far. 65 players have found it across Outlier's history.
It first turned up on Day 30, 19 June 2026. The most recent board was Day 100, 28 August 2026. Nobody has seen it on a board for 2 days.
First ever to find it
on Day 30, 19 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PERIODONTAL starts with P and ends with L. Sorted, its letters read ADEILNOOPRT - the shape to hunt for when the grid is scrambled. O appears more than once.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Words that start PERIODO
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 30
Could you have found PERIODONTAL?
OUTLIER is a daily word game. One grid, the same grid for everybody, and the words nobody else spots are the ones that pay. This word was on Day 30 - and most players walked straight past it.
Play today's OUTLIER