The rare daily word game sweeping the globe. Find what's hidden in plain sight.
PROLACTIN
Definition of PROLACTIN
noun
A peptide gonadotrophic hormone secreted by the pituitary gland; it stimulates growth of the mammary glands and lactation in females.
Wiktionary · CC BY-SA
Where it comes from
From pro- (from Ancient Greek πρό (pró, “before”)) + lact- (variation of lacto-, from Latin lac (“milk”)) + -in (modification of -ine).
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Latin
- Ancient Greek
- English
2 recorded generations before English.
Deepest traced root
1st
of 59 source languages in OUTLIER
30.6%
of traced words share this origin (25,330)
branch · 30.6% of traced words
How it is built
Same root, PROLACTIN · 2 relatives in the game
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
PROLACTIN in OUTLIER
Players have found it on 28 boards so far. 36 players have found it across Outlier's history.
It first turned up on Day 28, 17 June 2026. The most recent board was Day 160, 27 October 2026. Nobody has seen it on a board for 6 days.
First ever to find it
on Day 32, 21 June 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
PROLACTIN starts with P and ends with N. Sorted, its letters read ACILNOPRT - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Words that start PROLAC
Its neighbours in the OUTLIER dictionary - shortest first.
Also seen on Day 28
Could you have found PROLACTIN?
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 28 - and most players walked straight past it.
Play today's OUTLIER