Beginner level

-oid (usually changes nouns into adjectives)
-like (usually changes nouns into adjectives)
-ity (usually changes adjectives into nouns)
-tion (usually changes verbs into noun)
-logy/-ology (usually class-maintaining, with the word class remaining a noun)
-ant (usually changes verbs into nouns, often referring to a human agent)
Prefixes in English
List of Prefixes with Examples
Learn prefix list with examples in English.
Prefix ante-
Meaning: Before
Examples: Antenatal, anteroom, antedate
Prefix anti-
Meaning: Against, opposing
Prefix examples: Antibiotic, antidepressant, antidote, antisocial
Prefix circum-
Meaning: Around
Examples: Circumstance, circumvent, circumnavigate
Prefix co-
Meaning: With
Examples: Co-worker, co-pilot, co-operation
Prefix de-
Meaning: Off, down, away from
Examples: Devalue, defrost, derail, demotivate
Prefix dis-
Meaning: Opposite of, not
Prefix examples: Disagree, disappear, disintegrate, disapprove
Prefix em-, en-
Meaning: Cause to, put into
Examples: Embrace, encode, embed, enclose, engulf