Words used only in plural

Acoustics = acústica
Aerobics = gimnasia aeróbica
Athletics = atletismo
Barracks = cuartel
Bellows = fuelle
Belongings = efectos personales
Billiards = billar
Binoculars = binoculares
Bowls = petanca, bolos
Braces (GB), suspenders (US) = tiradores
Braces (US) = aparatos de ortodoncia
Clothes = vestimenta, ropa
Contents = contenido
Crossroads = cruce de caminos
Customs = aduana
Darts = dardos
Dominoes = dominó
Dungarees = pantalón de peto
Earnings = ingresos
Economics = ciencias económicas, economía
Ethics = ética
Gallows = horca
Gasworks = fábrica de gas
Glasses = gafas, anteojos
Goods = mercancías
Green = verduras
Gymnastics = gimnasia
Handcuffs = esposas
Headquarters = sede central, cuartel general
Jeans = jeans, pantalones vaqueros
Kennels = perrera
Knickers = bragas
Leggings = calzas, mallas
Linguistics = lingüística
Manners = modales
Maths = matemáticas
Mathematics = matemáticas
Means = medio, manera
Measles = sarampión
German measles = rubéola
Mumps = paperas
News = noticia
Odds = posibilidades
Outskirts = afueras (de la ciudad)
Pants (GB), underpants (US) = bragas, calzoncillos
Pants (US), trousers (GB) = pantalones
Phonetics = fonética
Physics = física
Pincers = pinzas
Pliers = alicates, tenazas
Pyjamas (GB), pajamas (US) = pijama
Remains = restos
Riches = riquezas
Scales = balanza
Scissors = tijeras
Series = serie, sucesión
Shears = tijeras de jardín
Shorts = bermudas, pantalones cortos
Shorts (US) = calzoncillos
Species = especie
Spectacles = gafas, anteojos (quevedos)
Stairs = escaleras
Statistics = estadísticas
Surroundings = alrededores
Tights (GB) = pantimedias
Tongs = pinzas (para el hielo)
Trunks = bañador, malla (para hombre)
Tweezers = pinzas