Y06W39VC Word Roots — anti- (against)

The prefix anti- comes from Greek and means 'against', 'opposed to' or 'the opposite of'. It appears in words that describe opposition, resistance or something that counteracts another force or idea. Understanding anti- helps students decode unfamiliar words in science, politics, social studies and formal writing. This module explores six key academic words built with this prefix alongside three Word Families examples.

Word Families

These three words all contain anti-. As you read, notice how the meaning 'against' helps you work out each word.

antidote

/ˈæntɪdəʊt/

an‑ti‑dote

noun

A substance that counteracts the effects of a poison; also used figuratively for something that counteracts a negative effect.

Word Breakdown: anti- (prefix meaning 'against')

Example: Some scientists argue that education is the most effective antidote to the spread of misinformation.

Synonyms: remedy, cure, counter

Collocations: an antidote to, serve as an antidote, a powerful antidote

antisocial

/ˌæntɪˈsəʊʃəl/

an‑ti‑so‑cial

adjective

Contrary to the norms of social behaviour; harmful or disruptive to society or social interaction.

Example: Littering in public spaces is widely considered antisocial behaviour that affects the whole community.

Synonyms: disruptive, harmful, unsociable

Collocations: antisocial behaviour, considered antisocial, antisocial tendencies

anticlockwise

/ˌæntɪˈklɒkwaɪz/

an‑ti‑clock‑wise

adjective / adverb

In the direction opposite to the rotation of the hands of a clock.

Example: The instructions told students to rotate the dial anticlockwise to lower the temperature.

Synonyms: counterclockwise, in the opposite direction

Collocations: turn anticlockwise, rotate anticlockwise, anticlockwise direction

Academic Vocab

communicate

/kəˈmjuːnɪkeɪt/

com‑mu‑ni‑cate

verb | [communicate – communicated – communicated]

To share information, ideas or feelings with others through speech, writing or other means.

Word family: communicate (v.), communication (n.), communicative (adj.)

Example: Effective writers communicate their ideas clearly by using precise language and a logical structure.

Synonyms: express, convey, share

Collocations: communicate effectively, communicate clearly, communicate ideas

convey

/kənˈveɪ/

con‑vey

verb | [convey – conveyed – conveyed]

To communicate or express a message, feeling or idea effectively.

Word family: convey (v.), conveyance (n.)

Example: The choice of words in a poem can convey emotions that are difficult to express directly.

Synonyms: communicate, express, transmit

Collocations: convey a message, convey meaning, convey emotion

express

/ɪkˈspres/

ex‑press

verb | [express – expressed – expressed]

To put thoughts, feelings or ideas into words, actions or art.

Word family: express (v.), expression (n.), expressive (adj.)

Example: Students were encouraged to express their personal response to the text through creative writing.

Synonyms: communicate, convey, articulate

Collocations: express an opinion, express clearly, express in writing

inform

/ɪnˈfɔːm/

in‑form

verb | [inform – informed – informed]

To give someone information or facts about something.

Word family: inform (v.), information (n.), informed (adj.)

Example: The purpose of a report is to inform the reader clearly about a topic using accurate and credible evidence.

Synonyms: tell, advise, notify

Collocations: inform the reader, well-informed, inform a decision

persuade

/pəˈsweɪd/

per‑suade

verb | [persuade – persuaded – persuaded]

To cause someone to believe or do something through argument, reasoning or evidence.

Word family: persuade (v.), persuasion (n.), persuasive (adj.)

Example: A well-structured argument supported by credible evidence is more likely to persuade a sceptical reader.

Synonyms: convince, influence, win over

Collocations: persuade the audience, persuade someone to, persuasive argument

clearly

/ˈklɪəli/

clear‑ly

adverb

‘Clearly’ is used to show that an idea is easy to understand or strongly supported.

Example: Clearly, the evidence supports the need for safer crossings near the school.

Synonyms: plainly, obviously, evidently

Collocations: clearly shows; clearly explains; clearly supports

Confusing Words

number vs amount

Number and amount both refer to quantity, but they are used with different types of nouns. Number is used with countable nouns — things you can count individually — for example, 'A large number of students attended the event.'

  • number — Number' is used with countable things — for example, 'A large number of students joined the club.'
  • amount — Amount is used with uncountable nouns — things that cannot be counted as individual units — for example, 'A large amount of research has been conducted on climate change.'

Memory rule: A quick test: can you count the items individually? If yes, use number (number of students, number of reports). If the quantity is a mass or bulk that cannot be counted individually, use amount (amount of water, amount of evidence). Common errors include 'amount of people' — since people can be counted, the correct form is 'number of people'.