12-letter words starting with Y

S opens 2,238 words at this length and C opens 2,167, while Y manages 10. The whole list fits on one screen, so there is nothing to filter here. Seven of the ten end in S, and yellowjacket leads the scores at 31.

All ten twelve-letter Y words at a glance

• Ten words open with Y, the smallest opening group at twelve letters.
• Four begin YELLOW: yellowhammer, yellowthroat, yellowjacket and yellownesses.
• Seven close with S, two with T and one with R.
• NWL2023 accepts all ten, Collins nine and ENABLE six.
• Scrabble scores average 20.5 and run from 15 to 31.

YELLOW runs through four of the ten

No other opening letter leans on a single colour word the way Y does here. Yellowhammer and yellowthroat are birds, and yellowjacket names a wasp as well as a naval rating, so three of the four YELLOW words are built from a root that already means something.

The fourth, yellownesses, simply turns the adjective into a noun. Outside YELLOW the list falls back on suffixed forms: youthfulness, yeastinesses, yieldingness and yesternights each add a suffix to a common word.

Learn the ten and you have covered every legal Y start at this length. Compare that with the 2,238 words behind S and the trade-off is obvious.

Scores and spellings across the ten

yellowjacket reaches 31 because it holds a J, a K and a W. yellowhammer is next at 25, then youthfulness and yellowthroat at 21.

Here is the twist: the best-scoring word in the group is the one Collins does not take. yellowjacket appears only in NWL2023, while the 25-point yellowhammer sits in all three lists, so a British club player and a North American one are working from different tops of this list.

What a ten-word list will not do