luminescent substance 7 Little Words

Latest answer — September 23, 2026

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Clue explained

A PHOSPHOR is a luminescent substance that emits light, often after being energized by radiation or electricity. It is used in materials such as fluorescent coatings and display screens.

Clue type:
Definition
Luminescent phosphor material glowing under ultraviolet light.

More Clues

Wednesday, September 23, 2026

Puzzle 1

Puzzle 2

Puzzle 3

Puzzle 4

Puzzle 5

Recent 7 Little Words Answers

The last 7 days of solutions

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The answer to “luminescent substance” in 7 Little Words is PHOSPHOR — an 8-letter word from Puzzle 5, most recently Wednesday, September 23, 2026. If this is the one clue standing between you and a finished board, that's the word you need — and below you'll find why it fits, how to build it from that puzzle's tiles, and links to the day's other clues if more than one is giving you trouble.

“luminescent substance” answer

The 7 Little Words answer for “luminescent substance” (most recently Wednesday, September 23, 2026, Puzzle 5) is:

PHOSPHOR·8 letters

You can also reveal it one tile at a time above if you'd rather keep some of the challenge.

When else has “luminescent substance” appeared?

  • September 23, 2026 (most recent) → PHOSPHOR

Why the answer is PHOSPHOR

This glow-producing material makes darkness shine with an eerie light ✨

How to build PHOSPHOR from the tiles

In 7 Little Words you don't type the answer — you assemble it from the puzzle's shared tile bank, and every tile is used exactly once across all seven answers. Puzzle 5's tiles for September 23, 2026 are:

PI · CS · HOR · SEFL · IES · ADD · UCT · ION · PHO · SP · HOR · ROA · DM · AST · ER · HAR · BOR · CE · NTE · RED

PHOSPHOR is built by combining the tiles PHO · SP · HOR in order. Because those tiles come out of the shared bank, locking in PHOSPHOR early also narrows what's left for the other six clues.

More clues from this puzzle

Stuck on another clue? Here are the rest of Puzzle 5's clues for September 23, 2026 — tap any for its answer and tile breakdown:

Want all five puzzles in one place? The full day is on the September 23, 2026 answers page, and today's live answers are always one tap from the main 7 Little Words page.

About 7 Little Words

7 Little Words is a daily clue-and-tile puzzle from Blue Ox Technologies. Each board gives seven clues and a bank of two- and three-letter tiles; you spell every answer by combining tiles, using each tile exactly once. Five free puzzles publish every day, resetting at midnight Eastern Time. This was a Wednesday puzzle.

Frequently asked questions

What is the answer to “luminescent substance” in 7 Little Words?

The answer is PHOSPHOR, an 8-letter word from Puzzle 5, most recently Wednesday, September 23, 2026.

How many letters is the answer to “luminescent substance”?

8 letters: PHOSPHOR.

Which tiles spell PHOSPHOR?

The tiles PHO · SP · HOR combine to spell PHOSPHOR, drawn from Puzzle 5's shared tile bank.

Can “luminescent substance” have a different 7 Little Words answer?

Blue Ox can reuse a clue on another date, and the tile bank differs each day, so the answer that fits can change.

What time does 7 Little Words reset?

Every day at midnight Eastern Time. We post each day's answers as soon as the new puzzles go live.

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