|
HEIGHTH |
 | HEIGHT |
"Width" has a TH at the end, so why doesn't "height"? It just doesn't, that's all. People speak this word incorrectly as often as they misspell it, so pronunciation is no guide. By the way, this is one of those pesky exceptions to the rule, "I before E except after C," but the vowels are seldom switched, perhaps because we see it printed on so many forms along with "age" and "weight."