* Adjective: Describing something that increases in quantity or effect over time.
* Example: "The cumulative effect of all the stress was starting to wear him down."
* Noun: Referring to the total amount of something accumulated over time.
* Example: "The cumulative impact of climate change is becoming increasingly evident."
* Adverb: Modifying a verb, adjective, or another adverb, meaning "in a cumulative way."
* Example: "The damages cumulatively amounted to millions of dollars."
To determine the part of speech, look at how the word is used in the sentence and its function.