The word suddennesses denotes a state of happening or occurring unexpectedly, rapidly, or abruptly. Some antonyms for suddennesses are predictability, gradualness, and deliberateness. Predictability pertains to the quality of being expected or anticipated, which implies that something happens in a certain pattern or sequence. Gradualness suggests the gradual development of a process or event, characterized by its slow and steady advancement. Deliberateness, on the other hand, denotes a purposeful and planned process, where actions are taken after careful consideration and planning. In conclusion, the antonyms of suddennesses relate to the opposite of being unexpected or unplanned, indicating a sense of control, purpose, and predictability.