The longest words possible from this apparently random collection are:
hobnailed
thinkable
You could also spell the proper noun "Tholian Web" (from Star Trek).
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 psycho.
Those letters will spell carnivore.
The letters can spell the anagram "annotation."
Those letters will spell democratic.
Those letters will spell turnip.
Those letters will spell artichoke.
Those letters will spell hairy.
The letters spell the word temples.