← Dictionary

leaven

/ˈlev.ən/
IELTSAcademic
noun

A substance, usually yeast, that makes dough rise. It creates air bubbles and makes bread light and soft.

  • The baker added leaven to the dough.
  • This bread needs more leaven.
  • Yeast is a common leaven.
verb

To spread through something and change it slowly. It is often used in formal or literary English.

  • His ideas leavened the discussion.
  • Humour leavens the serious tone.
  • The new view leavened their thinking.

Adinary Nuance

Leaven is close to 'yeast', but leaven is broader. Yeast is the living ingredient; leaven can mean any agent that makes dough rise. As a verb, leaven is more formal than 'lighten' or 'soften', and it often sounds literary.

In other languages

Vietnamese
Men
Spanish
Levadura
Chinese
酵母
Japanese
イースト
Korean
이스트

Etymology

Leaven comes from Old English 'hleofe' and related Germanic words meaning yeast or sour dough. It has been used in English since early medieval times.

Common phrases

the leaven ofleavened breadleaven the mood

Synonyms

Related words

Frequently asked questions

Is leaven the same as yeast?
Not exactly. Yeast is one type of leaven, but leaven can mean any rising agent.
Is leaven common in everyday English?
As a noun, it is fairly common in cooking or religious texts. As a verb, it is less common.
Can I use leaven in formal writing?
Yes, especially the verb. It sounds formal and a little literary.
What does leaven mean in the Bible?
It means yeast or something that makes bread rise, often used in a religious sense.