Tra từ might - Từ điển American Heritage Dictionary 4th

I. might¹ (mīt)n.
1. The power, force, or influence held by a person or group.
2. Physical strength.
3. Strength or ability to do something. See Synonyms at strength. See Regional Note at powerful. [Middle English, from Old English meaht, miht. See magh- in Indo-European Roots.] II. might² (mīt)aux.v. Past tense of may
1.
a. Used to indicate a condition or state contrary to fact:
She might help if she knew the truth.
b. Used to indicate a possibility or probability that is weaker than may:
We might discover a pot of gold at the end of the rainbow.
2. Used to express possibility or probability or permission in the past:
She told him yesterday he might not go on the trip.
3. Used to express a higher degree of deference or politeness than may, ought, or should:
Might I express my opinion? [Middle English, from Old English meahte, mihte, first and third person sing. past tense of magan, to be able. See may¹.]
Our Living Language In many Southern U.S. varieties of English, might can be paired with other auxiliary verbs such as could, as in We might could park over there. Words like might and could are known as modals, since they express certain “moods” (for example, I might go indicates an uncertain mood on the part of the speaker). Combinations such as might could, might would, and might can are known as double modals. Other less common combinations include may can, may will, and might should. Since double modals typically begin with may or might, they lessen the degree of conviction or certainty (much like the word possibly) more than a single modal does. Double modals are used, for example, to minimize the force of what one is saying, as when asking someone for a favor or when indicating displeasure.·Although double modals may sound odd outside of the South, they carry little if any social stigma within the South and are used by speakers of all social classes and educational levels—even in formal instances like political addresses. Like many features of Southern varieties of English, the use of double modals is probably due to the fact that many of the first English speakers in the South were Scotch-Irish, whose speech made use of double modals. This feature has been noted as far back as the Middle English period, but today's most common forms were not used to any great extent until the mid-18th century. They are surprisingly rare in dialect fiction but do occasionally occur, as in Old Yeller by Fred Gipson: “Jumper's liable to throw a fit with that hide rattling along behind him, and you might not can hold him by yourself.”