Down source

The answer to “Down source” in the The Washington Post crossword is EIDER — a 5-letter word. It most recently appeared in the The Washington Post crossword on October 18, 2026, a Sunday puzzle, at 57-Down. Below you'll find why that fill fits, every other answer we've recorded for this clue, and links into the puzzle it came from.

“Down source” answer

EIDER (5 letters)

Reveal the solution one letter at a time with the tiles above if you'd rather nudge yourself toward it than see the whole word at once. Just want it outright? The answer is EIDER.

What does EIDER mean?

Reading the plain dictionary sense of EIDER is often the fastest way to see why it answers this clue.

When else has “Down source” appeared?

The Washington Post reuses clues across dates, sometimes with a different answer depending on the grid. Here's where this exact clue has shown up, and what the answer was each time — handy when you're checking whether today's fill is the only one.

October 18, 2026 (most recent) → EIDER. We haven't indexed another appearance of this exact clue yet.

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