Here are some examples, categorized by their function:
Certainty/Likelihood:
* Strong: definitely, absolutely, certainly, undoubtedly, undeniably, inevitably, unquestionably, obviously, clearly, of course
* Moderate: likely, probably, perhaps, possibly, maybe, might, could
* Weak: may, could, might, possibly
Obligation/Necessity:
* Strong: must, should, ought to, have to, need to
* Moderate: advisable, recommended, important, essential
* Weak: can, may, might
Other high modality words:
* Emphasis: absolutely, truly, really, indeed, in fact, actually
* Agreement/Disagreement: agree, disagree, accept, reject, support, oppose
* Opinion/Belief: think, believe, feel, know, understand
Examples in sentences:
* High modality: "You must turn in your homework by tomorrow." (strong obligation)
* Moderate modality: "It probably won't rain today." (moderate likelihood)
* Low modality: "He might come to the party." (weak possibility)
Factors to consider:
* Context: The meaning of a modality word can change depending on the context of the sentence.
* Intonation: How you say a word can also affect its modality. For example, "You *could* do that" spoken with a rising intonation implies uncertainty, while spoken with a flat tone implies certainty.
Using high modality words can make your writing or speech more confident and persuasive. However, be careful not to overuse them, as it can come across as arrogant or dogmatic.