netts
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 26 words with the pattern D--TS. That is, five letter words with 1st letter D and 4th letter T and 5th letter S. In alphabetical order, they are: dalts dants darts dauts dawts debts deets delts dents dicts diets dints dirts ditts doats doits dolts dorts douts dowts drats ducts duets duits dunts dusts
The word is deflects; the missing letters are Fand C.
tattle, totter, tatter, titter, tatted, tattoo, totted, tutted
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern DY---TS. That is, seven letter words with 1st letter D and 2nd letter Y and 6th letter T and 7th letter S. In alphabetical order, they are: dynasts
The word "treats" has five phonemes: /t/ /r/ /i/ /ts/.
faults
netts
There is no such word as "petitition" but there is a word "petition". Count the Ts--there should be only two.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern U--TS. That is, five letter words with 1st letter U and 4th letter T and 5th letter S. In alphabetical order, they are: units
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -V-TS. That is, five letter words with 2nd letter V and 4th letter T and 5th letter S. In alphabetical order, they are: evets
Ts
Ts
tattle
Gibberish.
Ants
An eight-letter word cannot be made from four letters. T, I, E and S are not sufficient to make an eight-letter word without knowing what letters can be repeated and how often they are repeated. TESTIEST could work if you allow three Ts.