Intermediate+ Word of the Day: thin

thin (adjective, adverb, verb) /θɪn/ LISTEN

Thin is the opposite of fat.

Thin is the opposite of thick when we talk about objects and, when we talk about people, it is the opposite of fat. When we talk about clothes, thin means ‘of light material’ and, in relation to vegetation or hair, ‘not dense.’ Related to liquid food such as soup or sauces, it means ‘quite watery.’ As a synonym for superficialthin also means ‘lacking substance.’ As an adverb, thin means ‘in a thin manner’ and, as a verb, it means ‘to make thin.’

Example sentences

  • I cut the birthday cake into 20 thin slices.
  • Edward has lost loads of weight. He used to be quite fat, but now he's really thin.
  • It was a hot day, so Natalie put on a thin dress.
  • In this hot climate, we only have thin vegetation.
  • Add more liquid until you have a thin sauce.
  • The plot of this movie is pretty thin.
  • Slice the bread thin; you know I don't like thick slices.
  • Once the plants start coming up, you will need to thin them to about 12 centimeters apart.

Words often used with thin

thin on top: going bald. Example: “I saw my old boyfriend from school the other day; he’s really thin on top now. I bet he won’t have any hair left at all by the time he’s 35.”

In pop culture

The thin blue line is a term we sometimes use to talk about the forces of law and order, because the police wear blue uniforms, and the line they hold between order and the chaos of a lawless society. The Thin Blue Line is also the title of a 1990s TV comedy show, starring Rowan Atkinson. You can see a clip from the show here:

Did you know?

Thin air is literally the kind of air you get at high altitude, but figuratively, if someone or something appears out of thin air or disappears into thin air, it means that they seem to have come from nowhere or vanished without anyone knowing where they have gone. So, you might say, “I was walking along the road, when a ball appeared out of thin air and hit me on the head. Then a small child ran over and grabbed the ball. By the time I turned around, both the child and the ball had disappeared into thin air!”

Other forms

thinness (noun), thinly (adverb)

Origin

Thin dates back to before the year 900, in the form of the Old English adjective þynne (thynne), which became thyn(ne) in Middle English. It can be traced back to the Proto-Germanic thunni (thin) and the Proto-Indo-European root ten– (to stretch). This in related to the West Frisian ten, the Middle Low German dunne, the Middle Dutch dunne, the Dutch dun, the Old High German dunni, the German dünn, the Old Norse þunnr (thunnr), the Swedish tunn and the Danish tynd (all meaning ‘thin’), as well as the Sanskrit tanoti (stretches or lasts) and tanuh (thin), the Persian tar (string), the Lithuanian tankus (compact), the Greek teinein (to stretch), tetanos (stiff or rigid) and tonos (string), the Latin tenere (to hold, grasp, keep, possess or maintain) and tenuis (thin, rare or fine), and English words such as abstain, attend, contain, continue, detention, entertain, extend, intend, maintain, monotony, obtain, pretend, rein, sustain, temple, tenant, tend, tender, tennis, tense, tent, tone and tonic. Since the beginning, thin has been used to mean ‘narrow, lean or not dense,’ ‘fluid,’ ‘tenuous’ or ‘weak or poor,’ as well as ‘loose or sparse’ and figuratively, ‘easily seen through.’ The verb, in the form of the Old English þynnian (thynnian) (Middle English thynnen) also dates back to before the year 900, but linguists are pretty sure that it comes from the adjective. It originally meant ‘to make thin, lessen or dilute,’ as well as ‘to become thin.’ The sense ‘to become less numerous’ was first used in mid-18th century, while ‘to become thinner’ dates back to the early 19th century.

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