KEYSTONE · Day 40

Tuesday, September 1, 2026 — three word bridges.

Every neighbouring pair has to make one word. SOME → DAY → LIGHT → HOUSE works because someday, daylight and lighthouse are all words. You are given the two ends; you supply the middle. More than one bridge is often legal, and any legal bridge counts.

Warm-up

BIG→????→????→LOAD

4 letters, then 4 letters.

Show an answer

FOOT · WORK

bigfoot · footwork · workload — other legal bridges may also count.

Main

TAKE→????→????→OUT

4 letters, then 4 letters.

Show an answer

OVER · LOOK

takeover · overlook · lookout — at least 10 different legal bridges exist for this one, so a different answer may well have counted too.

Challenge

CAMP→????→????→ROOM

4 letters, then 4 letters.

Show an answer

FIRE · BALL

campfire · fireball · ballroom — at least 3 different legal bridges exist for this one, so a different answer may well have counted too.

How day 40 worked out

Day 40 ran on Tuesday, September 1, 2026. Its three bridges were BIG to LOAD, TAKE to OUT and CAMP to ROOM. Between them they build nine compound words, all listed at the bottom of this page. Below is the answer to each bridge and what makes it fit.

Warm-up: BIG to LOAD

The answer is FOOT then WORK, which gives bigfoot, footwork and workload. The first gap is 4 letters, the second is 4.

Only one pair in the KEYSTONE word bank joins BIG to LOAD, so this bridge had a single accepted answer. The narrow end is usually the one to solve first.

Main: TAKE to OUT

The answer is OVER then LOOK, which gives takeover, overlook and lookout. The first gap is 4 letters, the second is 4.

This bridge is not unique. KEYSTONE accepts 10 different pairs here and every one of them scores: OFF · HAND, DOWN · FALL, DOWN · TIME, OUT · BREAK, OUT · LOOK, OVER · TIME, OVER · WORK, OVER · LAY and OVER · TURN work just as well as the pair above. Ends like these sit in the crowded part of the compound-word network, which is why several routes cross them.

Challenge: CAMP to ROOM

The answer is FIRE then BALL, which gives campfire, fireball and ballroom. The first gap is 4 letters, the second is 4.

This bridge is not unique. KEYSTONE accepts 3 different pairs here and every one of them scores: GROUND · WORK and FIRE · WORK work just as well as the pair above. Ends like these sit in the crowded part of the compound-word network, which is why several routes cross them.

Every compound word in day 40

FOOT, WORK, OVER, FIRE and BALL have a page listing every compound built on them and the other chains you can run through them.

Every one of those nine compounds turns on a hinge word doing double duty. If you want to see the whole set KEYSTONE draws from, the reference list of 141 compound word hinges gives the words that attach in front of and behind each one.

Play day 40 yourself