KEYSTONE · Day 89

Tuesday, October 20, 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

ROOF→???→????→BOARD

3 letters, then 4 letters.

Show an answer

TOP · SIDE

rooftop · topside · sideboard — other legal bridges may also count.

Main

OVER→????→???→POST

4 letters, then 3 letters.

Show an answer

LOOK · OUT

overlook · lookout · outpost — at least 6 different legal bridges exist for this one, so a different answer may well have counted too.

Challenge

GREEN→?????→????→PLACE

5 letters, then 4 letters.

Show an answer

HOUSE · WORK

greenhouse · housework · workplace — other legal bridges may also count.

How day 89 worked out

Day 89 ran on Tuesday, October 20, 2026. Its three bridges were ROOF to BOARD, OVER to POST and GREEN to PLACE. 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: ROOF to BOARD

The answer is TOP then SIDE, which gives rooftop, topside and sideboard. The first gap is 3 letters, the second is 4.

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

Main: OVER to POST

The answer is LOOK then OUT, which gives overlook, lookout and outpost. The first gap is 4 letters, the second is 3.

This bridge is not unique. KEYSTONE accepts 6 different pairs here and every one of them scores: TIME · OUT, WORK · OUT, TAKE · OUT, LAY · OUT and TURN · OUT 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: GREEN to PLACE

The answer is HOUSE then WORK, which gives greenhouse, housework and workplace. The first gap is 5 letters, the second is 4.

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

Every compound word in day 89

SIDE, OUT, HOUSE and WORK 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 89 yourself