compassionate
Kind/Understanding (adj.) My friend is very compassionate and loving, but he also loses his temper when he is frustrated.
communism
System of public ownership (n) Chairman Mao introduced communism to China, and many governments have followed his lead.
Symmetry
Having equal size or shape (n) Many modern artists are not obeying the laws of symmetry, yet some still use it in their work.
Symbiotic
Living together for mutual benefit (adj.) Birds eat the barnacles off a whale's back, yet another example of symbiotic relationships in nature.
Synthesis
Combination of parts (n) DNA is a good example of synthesis, and grouping together information is another example.
Synopsis
Brief summary of a narrative (n) I wrote a synopsis about Rucker Park Setup, and another one about Catcher in the Rye.
Antipathy
strong dislike or hatred (n) Antipathy is an antonym for sympathy, and the word is used in many forms of literature.
antithesis
direct opposite (n) Her actions are the antithesis of her thoughts, but she is a very good liar.
obstruct
to block (v) Our catcher obstructs many runners, and he prevents them from scoring.
oppress
to use power to keep someone down (v) Fidel Castro liked to oppress his people, yet he was still honored by many.
co/com/col/sym/syn/
Together
anti/contra/ob/op-
Against
hypo-
to little (lacking)