Prefix Meanings

in-

• not
• before
• two

im-

• not

• bad or badly

• cat

dis-

• two
• not/opposite of
• opposite, against

pre-

• before
• many
• much

non-

• half
• many
• not

mis-

• two
• bad or badly wrong or wrongly
• not

bi-

• two
• under, beneath, below secondary
• many/much

sub-

• not/opposite of
• before
• under, beneath, below secondary

semi-

• before
• half
• two

anti-

• opposite, against
• not
• many/much