Hi, repeated is a verb which means that something has happened before at least more than once, while repeatable is an adjective which means that something can happen many times. Bye :)

Gdanning has given the right answer. "Repeated" means something has happened many times (or at least more than once). "Repeatable" means something is able to happen many times (or at least more than once). "He got a low grade in the class due to repeated absences." (He was absent many times, and because of this, his grade was low.) "This process is repeatable." (You can do this process more than once.)

Hi, Just wanted to add a few examples of using these words in the sentence. REPEATED is an adjective/word referring to an action/process done twice, trice and/or many more. sample sentences: "They have repeated this mistake so many times but they have not admitted who among them is the culprit" "To be sure that they have understood my instructions, I have repeated my announcement regarding the process of the application." REPEATABLE, an adjective/word that refers to process able to do again/ happen again or may refer to an event that happens in a cycle sample sentence: “This is a repeatable process which is complicated for people to strictly adhere due to its complexity.” “There is an effective way to achieve a repeatable sales boost.” Have a great day!

“Repeatable” is often used in science with a sense different than mentioned. The results were/weren’t repeatable. (We did the experiment many times and did/didn’t get the same results each time. Also “reproducible”) “Repeated” is used an adjective. Her repeated insults were getting on my nerves.

Repeated is a verb (past tense) while repeatable is an adjective meaning able to be repeated.