Simulants is a 9 letter English word. It's valid Scrabble word worth 10 points. It's valid Words with friends word worth 14 points.
You can make 529 anagrams from letters in simulants (ailmnsstu).
1820-30; Latin simulant- (stem of simulāns) imitating (present participle of simulāre). See simulate, -ant
If one must have either, better the simulant than the stimulant.