Verse, serve, sever, never, nerve, vein,vine, veer, seen, see, even,ever, eve, seer, sere, vise, 

Contained

No, to, at, tan, do

contaminated

Ate, act, at, am, ad, aim, atom, con, came, come, code, cat, cad, on, omen, mint, mate, not, none, tame, tone, tan, time, taco, toad, toe, tonic, date, dote, dome, man, men, mine, mite, mane, mad, mat

digruntled

I’m assuming you meant disgruntled 

led, is, run, side, dig

Mismanaged

Oh, yes, I did. Forgot the “s”. 
 

miasma, mange, gain, gem, game, gin, dam, damn, sun, sign, man, men, manage, dame, dime

theoretical

Theoretical

the, or, thee, ethic, ethical 

pharmaceutical 

Cat, male, rum, palm, race

cosmonaut

Coma, cost, cast, cot, con, can, cat, cut, man, mat, mons, auto, atom, ant, ton, taco

integration

Integration 

in, grate, on, tea, enter

symbolically 

Coma, calm, climb, clam, call, boil, ball, symbol, ally, lob, lamb, local

Trustworthy