The letters DRIVEF can spell the word "fervid" (enthusiastic, from hot). The noun form is the more familiar "fervor".
They can spell smaller words such as drive, fired, diver, and vied.
The letters in "these letters" can spell the phrase "ether settles." The letters can spell shorter words such as trestles, sheerest, shelters, and treeless.
The letters can spell the anagram "annotation."
The letters CEIECTLR can spell the word ELECTRIC.
Those letters will spell the verb launder.
Those letters spell after.
Those letters spell natural.
The letters in "these letters" can spell the phrase "ether settles." The letters can spell shorter words such as trestles, sheerest, shelters, and treeless.
Those letters will spell dollar.
The letters spell 'broccoli'.
Those letters spell delicate.
Those letters spell psycho.
Those letters will spell carnivore.
Those letters will spell artichoke.
The letters can spell the anagram "annotation."
Those letters will spell turnip.
Those letters will spell democratic.
The letters spell weary.