The rare daily word game sweeping the globe. Find what's hidden in plain sight.

XANTHINE

/ˈzanθiːn/8 letters

Definition of XANTHINE

noun

Any of a group of alkaloids that include caffeine, theophylline, and theobromine as well as the parent compound, a precursor of uric acid found in many organs of the body.

Wiktionary · CC BY-SA

Where it comes from

From international scientific vocabulary, from French xanthine, reflecting New Latin combining forms: xanth- + -ine; ultimately from Ancient Greek ξανθός (xanthós, “yellow”), because xanthine is yellowish-white. By surface analysis, xanth- + -ine.

Etymology via Wiktionary (CC BY-SA).

Word DNA

Line of descent

  1. Ancient Greek
  2. Latin
  3. French
  4. English

3 recorded generations before English.

Ancient Greek

Deepest traced root

3rd

of 59 source languages in OUTLIER

12.2%

of traced words share this origin (9,569)

Hellenic

branch · 12.2% of traced words

How it is built

noun2 syllablescompound-inexanth-

Same root, XANTHINE · 4 relatives in the game

Every Ancient Greek word → · The Word DNA of OUTLIER →

Rarity score
Withheld
Revealed only in play
Tier
Withheld
Find it yourself

OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.

XANTHINE in OUTLIER

Players have found it on 1 board so far.

Day 1Day 158
Its one board, across 158 finished boards · taller bars are busier boards
1
Boards found on
145
First board
13
Days since seen

It first turned up on Day 145, 12 October 2026. Nobody has seen it on a board for 13 days.

First found by a player on Day 145, 12 October 2026.

Built from these letters

XANTHINE
8
Letters
3
Vowels
5
Consonants
7
Different letters
3
Longest consonant run
1
Longest vowel run

XANTHINE starts with X and ends with E. Sorted, its letters read AEHINNTX - the shape to hunt for when the grid is scrambled. N appears more than once. It uses X - among the least common letters in written English.

Same letters, different word

One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.

XANTHEIN

Words that start XANTHI

Its neighbours in the OUTLIER dictionary - shortest first.

Could you have found XANTHINE?

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 145 - and most players walked straight past it.

Play today's OUTLIER