Tridecalogism
eavesdroppers, dastardliness, pauperization, valedictories, haemaphysalis, dactyloscopic, kathisophobia, hallucinatory, parenthesizes, lactationally, gamogenetical, gastroenteric, magnanimously,...
stereotypical The guy is standing next to a stereo.
The longest word that can be made using these letters is hydrolytic.
swam, swan, star, tear, rear, bear, wear, pear, phat, swat, clan, spat, flan, span, spam