| DIPHTHONG | • diphthong n. (Phonetics) A complex vowel sound that begins with the sound of one vowel and ends with the sound of… • diphthong n. (Rare) A vowel digraph or ligature. • DIPHTHONG n. a union of two vowels pronounced in one syllable. | 
| DIPHTHONGAL | • diphthongal adj. Pertaining to or characterized by a diphthong. • DIPHTHONGAL adj. of or like a diphthong. | 
| DIPHTHONGALLY | • diphthongally adv. By means of a diphthong. • DIPHTHONGAL adv. of or like a diphthong. | 
| DIPHTHONGED | • DIPHTHONG v. to pronounce as a diphthong. | 
| DIPHTHONGIC | • diphthongic adj. Of the nature of diphthong; diphthongal. • DIPHTHONGIC adj. having the nature of a diphthong. | 
| DIPHTHONGING | • DIPHTHONG v. to pronounce as a diphthong. | 
| DIPHTHONGISE | • diphthongise v. Alternative spelling of diphthongize. • DIPHTHONGISE v. to make into a diphthong, also DIPHTHONGIZE. | 
| DIPHTHONGISED | • diphthongised v. Simple past tense and past participle of diphthongise. • DIPHTHONGISE v. to make into a diphthong, also DIPHTHONGIZE. | 
| DIPHTHONGISES | • diphthongises v. Third-person singular simple present indicative form of diphthongise. • DIPHTHONGISE v. to make into a diphthong, also DIPHTHONGIZE. | 
| DIPHTHONGISING | • diphthongising v. Present participle of diphthongise. • DIPHTHONGISE v. to make into a diphthong, also DIPHTHONGIZE. | 
| DIPHTHONGIZE | • diphthongize v. (Transitive, phonetics) To change to a diphthong, as by inserting or removing a vowel. • diphthongize v. (Intransitive, phonetics) To become a diphthong. • DIPHTHONGIZE v. to make into a diphthong, also DIPHTHONGISE. | 
| DIPHTHONGIZED | • diphthongized v. Simple past tense and past participle of diphthongize. • DIPHTHONGIZE v. to make into a diphthong, also DIPHTHONGISE. | 
| DIPHTHONGIZES | • diphthongizes v. Third-person singular simple present indicative form of diphthongize. • DIPHTHONGIZE v. to make into a diphthong, also DIPHTHONGISE. | 
| DIPHTHONGIZING | • diphthongizing v. Present participle of diphthongize. • DIPHTHONGIZE v. to make into a diphthong, also DIPHTHONGISE. | 
| DIPHTHONGS | • diphthongs n. Plural of diphthong. • DIPHTHONG n. a union of two vowels pronounced in one syllable. | 
| TRIPHTHONG | • triphthong n. A monosyllabic vowel combination usually involving a quick but smooth movement from one vowel to another… • TRIPHTHONG n. three vowel sounds pronounced as one. | 
| TRIPHTHONGAL | • triphthongal adj. Pertaining to a triphthong. • TRIPHTHONGAL adj. relating to triphthong. | 
| TRIPHTHONGS | • triphthongs n. Plural of triphthong. • TRIPHTHONG n. three vowel sounds pronounced as one. |