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15-Letter Words Starting With TH

  • 63 words
  • All English dictionaries
  • Scrabble points
Dictionary

Popular 15-Letter Words Starting With TH

The most familiar words on this list, with their Scrabble scores.

All 15-Letter Words Starting With TH 63 words

How common is TH at the start of fifteen-letter words?

Our combined English word list has 63 fifteen-letter words that start with TH. They average 24.6 points, the best is THERMOCHEMISTRY (30 points) and 54% end in S.

Total words
63
Average Scrabble score
24.6
out of 30 max
Everyday words
0%
common in ordinary English
Most common ending
S
54% of words

Most common last letters

  • s 54%
  • y 9.5%
  • g 6.3%

Top vowel pairs

  • io15.9%
  • ie14.3%
  • eo7.9%

Share of words where these two vowels sit side by side.

Rare words worth knowing

Valid in this dictionary but rarely seen in everyday English.

Highest-scoring fifteen-letter word that starts with TH

t 1h 4e 1r 1m 3o 1c 3h 4e 1m 3i 1s 1t 1r 1y 4

T 1 + H 4 + E 1 + R 1 + M 3 + O 1 + C 3 + H 4 + E 1 + M 3 + I 1 + S 1 + T 1 + R 1 + Y 4 = 30 points

Double word
60 pts
Triple word
90 pts

Face value of the tiles, then the whole word on a double- or triple-word square (letter bonuses and bingos not included).

thermochemistry

  1. nounthe branch of chemistry that studies the relation between chemical action and the amount of heat absorbed or generated
  • Scrabble US
  • Scrabble UK
  • Words With Friends

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15-Letter Words Starting With TH FAQ

How many fifteen-letter words that start with TH are there?

There are 63 fifteen-letter words that start with TH in our combined English word list. Other dictionaries give different totals, so switch dictionary at the top of the list to compare.

What is the highest-scoring fifteen-letter word that starts with TH?

THERMOCHEMISTRY is worth 30 points in Scrabble before any bonus squares. Other strong options are THEATRICALIZING (30), THERMALIZATIONS (29), THERMOCHROMISMS (29).

Which rare fifteen-letter words that start with TH score well?

Uncommon but valid choices include THEATRICALIZING (30), THERMALIZATIONS (29), THERMOCHROMISMS (29), THERMOJUNCTIONS (29). Few players know them, so they can catch an opponent off guard.