Definition of lest in English:

lest

conjunction lɛstlɛst

formal

1With the intention of preventing (something undesirable); to avoid the risk of.
〈正式〉以免（坏事的发生）；免得；唯恐
he spent whole days in his room, wearing headphones lest he disturb anyone
他整天整天待在屋里，头上戴着耳机，以免打扰别人。
Example sentencesExamples
- Those in attendance are asked not to look directly at the panelists, lest you disturb the mood.
- They are sent to sleep on the streets at night, lest they disturb the mother's business.
- They usually prefer to keep their goals as vague as possible lest it count against them at the next election.
- As to this it is necessary to avoid misapprehension lest the protection be too limited.
1. 1.1 (after a clause indicating fear) because of the possibility of something undesirable happening; in case.
  用在表示害怕的从句后面怕，担心
  she sat up late worrying lest he be murdered on the way home
  她满心焦虑守候到很晚，怕他在回来的路上会被谋杀。
  Example sentencesExamples
  I'm a bit worried about posting this, lest it is not taken as it is meant.
  The economy suffers, as my sisters and brothers fear going to work lest they find a bullet in their mailbox.
  When she was a couple of feet still from the bed she stopped, afraid to go on lest her fears came true.
  Portia immediately fell in love with him and feared lest he should choose the wrong box.
  If I had been less cautious I might have been more wise, but I was half crazy with fear lest you should learn the truth.
  Synonyms
  in case, just in case, for fear that, in order to avoid, to avoid the risk of

Usage

There are very few contexts in English where the subjunctive mood is, strictly speaking, required: lest remains one of them. Thus the standard use is she was worrying lest he be attacked (not lest he was …) or she is using headphones lest she disturb anyone (not … lest she disturbs anyone). See also subjunctive

Origin

Old English thȳ lǣs the 'whereby less that', later the læste.

Rhymes

abreast, arrest, attest, beau geste, behest, bequest, best, blessed, blest, breast, Brest, Bucharest, Budapest, celeste, chest, contest, crest, digest, divest, guest, hest, infest, ingest, jest, Midwest, molest, nest, northwest, pest, prestressed, protest, quest, rest, self-addressed, self-confessed, self-possessed, southwest, suggest, test, Trieste, unaddressed, unexpressed, unimpressed, unpressed, unstressed, vest, west, wrest, zest

Definition of lest in US English:

lest

conjunctionlɛstlest

formal

1With the intention of preventing (something undesirable); to avoid the risk of.
〈正式〉以免（坏事的发生）；免得；唯恐
he spent whole days in his room, headphones on lest he disturb anyone
他整天整天待在屋里，头上戴着耳机，以免打扰别人。
Example sentencesExamples
- They are sent to sleep on the streets at night, lest they disturb the mother's business.
- Those in attendance are asked not to look directly at the panelists, lest you disturb the mood.
- As to this it is necessary to avoid misapprehension lest the protection be too limited.
- They usually prefer to keep their goals as vague as possible lest it count against them at the next election.
1. 1.1 (after a clause indicating fear) because of the possibility of something undesirable happening; in case.
  用在表示害怕的从句后面怕，担心
  she sat up late worrying lest he be held up on the way home
  她满心焦虑守候到很晚，怕他在回来的路上会被谋杀。
  Example sentencesExamples
  If I had been less cautious I might have been more wise, but I was half crazy with fear lest you should learn the truth.
  When she was a couple of feet still from the bed she stopped, afraid to go on lest her fears came true.
  The economy suffers, as my sisters and brothers fear going to work lest they find a bullet in their mailbox.
  Portia immediately fell in love with him and feared lest he should choose the wrong box.
  I'm a bit worried about posting this, lest it is not taken as it is meant.
  Synonyms
  in case, just in case, for fear that, in order to avoid, to avoid the risk of

Usage

There are very few contexts in English where the subjunctive mood is, strictly speaking, required: lest remains one of them. Thus the standard use is she was worrying lest he be attacked (not lest he was attacked), or she is using headphones lest she disturb anyone (not lest she disturbs anyone). See also subjunctive

Origin

Old English thȳ lǣs the ‘whereby less that’, later the læste.

词汇	lest
释义	Definition of lest in English: lest conjunction lɛstlɛst formal 1With the intention of preventing (something undesirable); to avoid the risk of. 〈正式〉以免（坏事的发生）；免得；唯恐 he spent whole days in his room, wearing headphones lest he disturb anyone 他整天整天待在屋里，头上戴着耳机，以免打扰别人。 Example sentencesExamples Those in attendance are asked not to look directly at the panelists, lest you disturb the mood. They are sent to sleep on the streets at night, lest they disturb the mother's business. They usually prefer to keep their goals as vague as possible lest it count against them at the next election. As to this it is necessary to avoid misapprehension lest the protection be too limited. 1.1 (after a clause indicating fear) because of the possibility of something undesirable happening; in case. 用在表示害怕的从句后面怕，担心 she sat up late worrying lest he be murdered on the way home 她满心焦虑守候到很晚，怕他在回来的路上会被谋杀。 Example sentencesExamples I'm a bit worried about posting this, lest it is not taken as it is meant. The economy suffers, as my sisters and brothers fear going to work lest they find a bullet in their mailbox. When she was a couple of feet still from the bed she stopped, afraid to go on lest her fears came true. Portia immediately fell in love with him and feared lest he should choose the wrong box. If I had been less cautious I might have been more wise, but I was half crazy with fear lest you should learn the truth. Synonyms in case, just in case, for fear that, in order to avoid, to avoid the risk of Usage There are very few contexts in English where the subjunctive mood is, strictly speaking, required: lest remains one of them. Thus the standard use is she was worrying lest he be attacked (not lest he was …) or she is using headphones lest she disturb anyone (not … lest she disturbs anyone). See also subjunctive Origin Old English thȳ lǣs the 'whereby less that', later the læste. Rhymes abreast, arrest, attest, beau geste, behest, bequest, best, blessed, blest, breast, Brest, Bucharest, Budapest, celeste, chest, contest, crest, digest, divest, guest, hest, infest, ingest, jest, Midwest, molest, nest, northwest, pest, prestressed, protest, quest, rest, self-addressed, self-confessed, self-possessed, southwest, suggest, test, Trieste, unaddressed, unexpressed, unimpressed, unpressed, unstressed, vest, west, wrest, zest Definition of lest in US English: lest conjunctionlɛstlest formal 1With the intention of preventing (something undesirable); to avoid the risk of. 〈正式〉以免（坏事的发生）；免得；唯恐 he spent whole days in his room, headphones on lest he disturb anyone 他整天整天待在屋里，头上戴着耳机，以免打扰别人。 Example sentencesExamples They are sent to sleep on the streets at night, lest they disturb the mother's business. Those in attendance are asked not to look directly at the panelists, lest you disturb the mood. As to this it is necessary to avoid misapprehension lest the protection be too limited. They usually prefer to keep their goals as vague as possible lest it count against them at the next election. 1.1 (after a clause indicating fear) because of the possibility of something undesirable happening; in case. 用在表示害怕的从句后面怕，担心 she sat up late worrying lest he be held up on the way home 她满心焦虑守候到很晚，怕他在回来的路上会被谋杀。 Example sentencesExamples If I had been less cautious I might have been more wise, but I was half crazy with fear lest you should learn the truth. When she was a couple of feet still from the bed she stopped, afraid to go on lest her fears came true. The economy suffers, as my sisters and brothers fear going to work lest they find a bullet in their mailbox. Portia immediately fell in love with him and feared lest he should choose the wrong box. I'm a bit worried about posting this, lest it is not taken as it is meant. Synonyms in case, just in case, for fear that, in order to avoid, to avoid the risk of Usage There are very few contexts in English where the subjunctive mood is, strictly speaking, required: lest remains one of them. Thus the standard use is she was worrying lest he be attacked (not lest he was attacked), or she is using headphones lest she disturb anyone (not lest she disturbs anyone). See also subjunctive Origin Old English thȳ lǣs the ‘whereby less that’, later the læste.
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