Is there a way to unambiguously convey that the "th" in a word should be voiced, like in the word "the", but without using the International Phonetic Alphabet (or any non-alphabetic characters)?
Example: If I want to show the correct pronunciation of the proper name Umelmehey in this fashion, I can write "uh-MEL-mah-hey".
If I want to show that a word, e.g. "lather", should be pronounced so that it rhymes with laser (meaning one who lathes), and there is no word that rhymes with it, how can I do that?