Pronouncing <th>

One syllable words ending with  /θ/ – unvoiced
bath, berth, birth, both, breadth, breath, broth, dearth, death, depth, faith, fifth, filth, forth, froth, girth, goth, growth, health, hearth, heath, kith, length, loath (also loth), math, meth, month, moth, mouth, north, path, pith, plinth, sheath, sleuth, sloth, smith, strength, tenth, truth, twelfth, width, with, worth, wrath, wreath, youth,
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One syllable words ending with /ð/ – voiced
bathe, booth, breathe, clothe, lathe, lithe, loathe, seethe, sheathe, smooth, soothe, swathe, teethe, tithe, writhe,
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