-ism, -ismus

(Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait)

selenotropism
1. Growth in response to moonlight.
2. A tendency to turn towards the moon's rays.
self-cannibalism (s) (noun), self-cannibalisms (pl)
A rare condition in which one's own body parts are being bitten off and swallowed.
self-criticism
Criticism of oneself.
sensationalism (s) (noun), sensationalisms (pl)
The use of language that amazes, challenges, and thrills readers or audiences: The speaker's sensationalism during his talk captivated the attention of the people who were attending the presentation.
sensualism (s) (noun), sensualisms (pl)
The ethical doctrine that physical pleasures are the highest good: Ed and Dorothy believe that sensualism should be their objective and that's why they go on expensive vacations to sunny locations.
sentimentalism (s) (noun) (no plural)
A tendency to express feelings of love, sadness, excitement, etc.; often in a way that seems foolish or overly done: The sentimentalism of the winning football team, and the supporters, obviously was excessive and way too much for most viewers who were watching on TV!
septuagenarianism
Seventy years old or seventy to seventy-nine years of age.
serialism
1. Serial compositions.
2. The theory or composition of serial music.

A technique for composing music that uses a tone row (a nonrepeating arrangement of the 12 tones of the chromatic scale) as the unifying basis for a composition's melody, harmony, structural progressions, and variations.

sesquipedalianism, sesquipedalism (s) (noun); sesquipedalianisms, sesquipedalisms (pl)
The practice of using, long and obscure words in speech or writing: "The senator's speech was sprinkled with sesquipedalianisms which confused reporters and other members of the audience because he was speaking with many incomprehensibly big words."

You may see many examples of sesquipedalianisms with solutions, starting with Group 1-17, by going to sesquipedalia verba.

sexagenarian, sexagenarianism
Sixty years old or sixty to sixty-nine years of age.
sexdigitism
The state of having six fingers on a hand, or six toes on a foot.
sexism (s) (noun)
Unfair treatment of a person because of his or her gender: "There are people who believe that sometimes there is a problem of sexism when women apply for a job."

"Some linguists say there is too much sexism in language when so much emphasis is placed on the use of the masculine gender."

sialismus
An increase in the flow of saliva.
siderism
sigmatism
Incorrect, difficult, or the too frequent use of the "s" sound.