You can refer to people who are opposed to a particular activity or idea as antis.
[informal]
The antis argue that wind turbines harm the local birdlife.
2. adjective [verb-link ADJECTIVE]
If someone is opposed to something you can say that they are anti it.
[informal, spoken]
That's why you're so anti other people smoking.
anti-
(ænti-)
1. prefix
Anti- is used to form adjectives and nouns that describe someone or something that is opposed to a particular system, practice, or group ofpeople.
...anti-government demonstrations.
...anti-racist campaigners.
...anti-Fascists.
2. prefix
Anti- is used to form adjectives and nouns that describe things that are intended to destroy something harmful or to prevent something from happening.
...anti-aircraft guns.
...anti-discrimination legislation.
...anti-inflammatory drugs.
anti in British English
(ˈæntɪ) informal
adjective
1.
opposed to a party, policy, attitude, etc
he won't join because he is rather anti
noun
2.
an opponent of a party, policy, etc
anti- in British English
prefix
1.
against; opposing
anticlerical
antisocial
2.
opposite to
anticlimax
antimere
3.
rival; false
antipope
4.
counteracting, inhibiting, or neutralizing
antifreeze
antihistamine
5.
designating the antiparticle of the particle specified
antineutron
Word origin
from Greek anti
anti in American English
(ˈænˌtaɪ; ˈænti)
nounWord forms: pluralˈanˌtis
1. Informal
a person opposed to some policy, proposal, action, etc.
preposition
2. Informal
opposed to; against
Word origin
< anti-, in various compounds
anti- in American English
(ˈænˌtaɪ; ˈænti; ˈæntɪ; ˈæntə)
1.
against, hostile to, opposed to
antilabor, antislavery
2.
that counteracts, that operates against
antiaircraft
3.
that prevents, cures, or neutralizes
antitoxin
4.
opposite, reverse
antiperistalsis
5.
rivaling
antipope
6.
having the superficial aspect, but not the usual characteristics, of
antihero
Word origin
Gr anti-, ant- < anti, against < IE *anti, facing, opposite, near (> L ante, opposite, before) < base *ant-s, front, forehead
Examples of 'anti' in a sentence
anti
The call has sparked unrest, with reports of violence between pro and anti IS factions.
The Sun (2016)
In the days when you did your own cleaning, were you pro or anti rubber gloves?
The Sun (2010)
McDonald's: are you pro or anti?
Times, Sunday Times (2013)
Julian had begun to suspect there was some anti- Americanism in this household.
Jon Cleary YESTERDAY'S SHADOW (2002)
Having pinned so much on his visit, Webb hoped it wouldn't be an anti-
Fraser, Anthea THE GOSPEL MAKERS
All related terms of 'anti'
anti-atom
an atom composed of antiparticles , in which the nucleus contains antiprotons with orbiting positrons
anti-hero
An anti-hero is the main character in a novel, play, or film who is not morally good and does not behave like a typical hero .
anti-icer
a device fitted to an aircraft to prevent the formation of ice
anti-lock
designating or of an automotive braking system that prevents the wheels from locking during a sudden stop
anti-Nazi
opposing any individual or group that espouses Nazi ideologies
anti-pill
denoting a material that does not form pills or that resists pilling
anti-site
a website through which people can express their contempt for a particular person, organization , etc
anti-skid
intended to prevent vehicles from skidding
anti-ageing
of or relating to any product or procedure claiming to reverse or slow down the effects of ageing
anti-alias
to process (a digital graphic image) so that it has a smooth , rather than a jagged, edge
anti-choice
opposed to the legal right to obtain an abortion ; pro-life
anti-Jewish
→ anti-Semitic
anti-knock
An anti-knock agent helps to stop an engine from knocking , making it function more smoothly.
anti-roman
a type of prose fiction in which conventional or traditional novelistic elements are rejected
anti-Semite
An anti-Semite is someone who strongly dislikes and is prejudiced against Jewish people.
anti-social
Someone who is anti-social is unwilling to meet and be friendly with other people.
anti-Soviet
opposed to anything characteristic of or relating to the former Soviet Union and its government
anti-virus
Anti-virus software is software that protects a computer against viruses .
anti-abortion
opposed to abortion
anti-aircraft
of or relating to defence against aircraft attack
anti-allergic
intended to prevent or minimize an allergic reaction
anti-American
opposed to anything of or relating to the United States of America
anti-androgen
any of a class of drugs that oppose the action of androgens ; used in the treatment of prostate cancer and various male sexual disorders
anti-British
opposed to anything characteristic of or relating to Britain
anti-Catholic
opposed to the beliefs , practices , and adherents of the Roman Catholic Church
anti-dumping
designating or of laws, tariffs , etc. that ban or counteract the dumping of goods by a foreign manufacturer
anti-European
opposed to the European Union or to political union of the countries of Europe
Anti-Lebanon
a mountain range running north and south between Syria and Lebanon , east of the Lebanon Mountains. Highest peak : Mount Hermon , 2814 m (9232 ft)
anti-nuclear
opposed to military and industrial applications of nuclear energy and to technologies which produce radioactive waste products
anti-Semitic
Someone or something that is anti-Semitic is hostile to or prejudiced against Jewish people.
anti-Semitism
Anti-Semitism is hostility to and prejudice against Jewish people.
anti-universe
a universe made up of antimatter , postulated to exist far out in space
anti-Zionist
a person who is opposed to Zionism
anti-apartheid
opposed to apartheid
anti-authority
demonstrating a rejection of authority
anti-Bolshevik
a person who is opposed to Bolshevism
anti-bourgeois
opposed to anyone or anything considered bourgeois
anti-Communist
a person who is opposed to Communism
anti-depressant
An anti-depressant is a drug which is used to treat people who are suffering from depression .
anti-globalizer
a political activist who challenges the concept of globalization and promotes practices that do not cause environmental damage
anti-G suit
a close-fitting garment covering the legs and abdomen that is worn by the crew of high-speed aircraft and can be pressurized to prevent blackout during certain manoeuvres
anti-inflation
of or relating to measures to counteract or combat inflation
anti-abortionist
An anti-abortionist is someone who wants to limit or prevent the legal availability of abortions .
anti-Establishment
opposed to established authority
anti-globalization
a political belief opposed to the emergence of a single world market dominated by multinational companies
anti-imperialist
opposed to imperialism
anti-inflammatory
reducing inflammation
anti-inflationary
of or relating to measures to counteract or combat inflation
anti-intellectual
hostile to or opposed to intellectual persons or matters, ideas, activities, etc.
anti-interference
intended to reduce electronic interference during radio transmissions