| ABLAUT | Alternation in the vowels of related word forms e.g. sing, sang, sung (6) |
| OSCAR | Radio operator's code word for one of the vowels of the alphabet (5) |
| DEMANDED | Insisted on having the damn alternation in the document! (8) |
| ROGET | In 1852, which doctor published his now-famous classified collection of related words? (5) |
| RULED | "If I ... the world, every day would be the first day of spring; Every heart would have a new song to sing," sang Tony Bennett in 1965 |
| LONGANDSHORT | --- work is the alternation in masonry of vertical and horizontal blocks (4,3,5) |
| VIBRATO | Rapid alternation in pitch |
| FADS | A shortening of a fiddle-related word for "trivial nonsense" that is used to mean "crazes, fancies, whims" (4) |
| COGNATE | Related word |
| FLORY | A bloom-related word indicating a lilied decorative treatment using a fleur-de-lis motif on a heraldic charge (5) |
| ARSERE | They blazed (short form), eg the eyes of the Palladium, Aen. 2.172 |
| NASALS | Phonetically, all of the vowels in the French phrase "un bon vin blanc" |
| WOLVES | Distorted vowels of Black Country players (6) |
| AMOEBA | Name, from "change, alternation", for any one of the protozoans regarded as nature's original shapeshifters (6) |
| CHRONO | It's about time, in word forms |
| STUMPS | Baffles (ABOUT THIS PUZZLE: If you saw the headline "Fiend Found!" you might instantly notice that, between the two words, only the vowels change - the consonants stay put. Okay, if you were me, you'd |
| SEESAW | Comprehend saying of repeated alternation (6) |
| UMLAUT | Dots over the vowel in KAA¶ln (6) |
| GADSBY | Author Ernest Vincent Wright's lipogrammatic literary oddity of some 50,000 words minus the vowel "e" (6) |
| DRAWLS | Prolongs the vowels |
