unless

连词 conj.
中文释义
美 /ɪnˈlɛs/

英文释义

连词 conj.
  1. Except on a specified condition; if not.
    — I’m leaving unless I get a pay rise.
  2. If not; used with counterfactual conditionals.
    — Who would know of Alexander or Caesar, or would respect the Stoics or the Peripatetics, unless they had been distinguished by the memorials of writers?
  3. Except if; used with hypothetical conditionals.
    — Q. If Lieutenant P. had given the word "Fire," would you have fired, and at what?—A. I should not have known, unless he had told me what to fire at.

词形变化

unlesse alternative unlessen alternative

词汇关系

反义词
if
衍生词
precisely unless unlesss unless and until until and unless

词源

From Middle English unlesse, earlier on lesse (modern on + less), from (not) on lesse (than) (“(not) on a less compelling condition (than)”). The quality of negation in the word and the lack of stress changed on to un-.
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