What's That Flat?
Deletion
A word or phrase becomes another when an interior letter is removed.
simile sLepanto LeDELETION (*7, 4-2)
We found a TWO for shelter from the sun-
So unrelenting was the summer heat-
And looked out at the sparkling Gulf of ONE,
Where long ago the Turks had met defeat.=Mangie
A deletion may include more than two words.
startling startling
starling starling
staring staring
string string
sting sting sing
(Do you want to go on to THREE = sin and TWO = in? In NPL terms, those are not deletions but one curtailment and one beheadment. You could still use all eight words in one puzzle, but you’d have to warn the solver that two-unspecified-steps were a curtailment and beheadment, not deletions.)
Baltimore deletion
Each letter in turn is removed to form a new word.
peat peat eat
peat peat pat
peat peat pet
peat peat pea
Bigram deletion
A word or phrase becomes another when two consecutive interior letters are removed.
catenary caRepeated-letter deletion
A word or phrase becomes another when one letter is removed wherever it occurs.
bassist bassist bait
prospered prospered rose-red
Reversed deletion
After you’ve deleted a letter from the first word, you reverse it to get the second.
espalier espalPhonetic deletion
A word or phrase becomes another when an interior sound is removed.
revelry revelFor discussion of what constitutes a single sound, see phonetic flats.
More Examples
All sorts of combinations of these elements are possible.