Use of the hyphen. How and when to use the hyphen

O hyphen it is a graphic sign whose functions are associated with an infinite number of linguistic occurrences. Among these functions, we can mention: linking compound words; join oblique pronouns and some verb forms; separate the syllables of a given word; link some words preceded by prefixes etc.

New deal

With the advent of New Orthographic Reform, there have been some changes regarding its applicability. Thus, given the complexity that is attributed to the sign in question, this article is intended to purpose to highlight them, trying to emphasize, in some cases, what prevailed before and what currently in force. Based on these assumptions, we therefore find:

Cases where the hyphen is used:

  • The hyphen is used when the prefix ends in a vowel and the second word starts with the same vowel.

Anti-inflammatory

anti-inflationary

microwave

Microorganism

Important note:

This rule standardizes some exceptions already in force before the Agreement, such as self-observation, auto-bus and counterattack.

  • This rule does not apply to the prefixes “-co”, “-pro”, “-re”, even if the second word starts with the same vowel that ends the prefix.

co-obligate

co-acquired

Coordinate

reissue

prootic

proinsulin

  • With prefixes, the hyphen is used in front of words beginning with “h”.

unsanitary

antihistoric

extra-human

prohydrotropic

Superman

  • The hyphen is used when the prefix ends in a consonant and the second word begins with the same consonant.

interregional

sub-librarian

super resistant

  • With the prefix “-sub”, in front of words starting with “r”, the hyphen is used.

sub-regional

sub-race

subkingdom

  • In front of the prefixes -beyond, -beyond, -well, -ex, -post, -newly, -without, -vice, the hyphen is used.

overseas

underwater

newborn

landless

vice director

good-natured

  • In front of the adverb “mal”, when the second word starts with a vowel or “h”, the hyphen is present.

grumpy

malicious

rude

  • With the prefixes “-circum” and “-pan”, in front of words starting with “vowel, m, n or h”, the hyphen is used.

circumnavigator

pan-american

circum-hospital

panhellenism

  • With Tupi-Guarani suffixes, such as “-açu”, “-guaçu”, “-mirim”, the hyphen is used.

alligator-açu

caja-mirim

guaré

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Cases where the hyphen NO is employee:

  • The hyphen is no longer used when the prefix ends in a vowel and the second word begins with a different vowel.
BEFORE LATER
self-evaluation self-evaluation
driving school driving school
self esteem self esteem
co-author coauthor
infrastructure infrastructure
semi-arid semiarid

This new rule standardizes some exceptions that existed before the Agreement, such as aerospace, anti-American, socioeconomic, etc.

  • The hyphen is no longer used in certain words that have lost the notion of composition.
BEFORE LATER
bigwig bigwig
parachute parachute
parachutist parachutist

Observation:

→ The hyphen still remains in compound nouns that have lost their individual meaning to build a semantic unit, as well as in those that designate botanical and zoological species.

I saw you

cauliflower

umbrella

Fennel

smelling pepper

  • The hyphen is no longer used in noun, adjective, pronominal, verbal, adverbial, prepositional or conjunctive phrases.

Weekend

coffee with milk

Exceptions:

The hyphen still remains in some cases, expressed by:

cologne

pink

  • When the second word starts with “r” or “s”, after the prefix ended in a vowel, the hyphen is removed and these consonants are duplicated.
BEFORE LATER
anteroom anteroom
anti-wrinkle anti-wrinkle
anti social antisocial
self Portrait self portrait
extrasensory extrasensory
adrenal adrenal
counter-reform counter-reform
ultrasound ultrasound

Important notes:

- The hyphen will be kept when the prefixes end with “r” and the second element starts with the same letter.

hyper exquisite

interregional

super romantic

super-racist

  • The hyphen is not used when the prefix ends in a vowel and the second element starts with a consonant different from “r” or “s”.

draft

auto part

paycheck

extra strong

ultramodern

  • The hyphen should not be used when the prefix ends with a consonant and the second word starts with a vowel or another different consonant.

hypermarket

hyperacidity

intercity

underemployment

Super interesting

overpopulation

  • Before the adverb “evil”, when the second word starts with a consonant, the hyphen is not used.

malspoken

ill-governed

underdone

mistreated

scruffy


By Vânia Duarte
Graduated in Letters

Would you like to reference this text in a school or academic work? Look:

DUARTE, Vânia Maria do Nascimento. "Use of the hyphen"; Brazil School. Available in: https://brasilescola.uol.com.br/gramatica/emprego-do-hifen.htm. Accessed on June 27, 2021.

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