containsAll

Checks if all elements in the specified collection are contained in this collection.

inline fun <T> Collection<T>.containsAll(elements: Collection<T>): Boolean(source)

val mainList = listOf("apple", "banana", "cherry", "date")
val subList = listOf("banana", "cherry")

println(mainList.containsAll(subList))   // Prints: true

val missingList = listOf("banana", "fig")
println(mainList.containsAll(missingList)) // Prints: false

Source