The antonyms for "say softly" are "shout," "yell," "roar," "scream," and "bellow." These words represent a vocal expression that denotes a loud, forceful, and intense way of speaking. The use of these antonyms can indicate a change in tone and emotion, from a quiet and peaceful discussion to a heated argument or confrontation. Moreover, these antonyms reflect different personalities, moods, and intentions of the speaker, such as frustration, anger, excitement, or urgency. Therefore, choosing the appropriate antonym of "say softly" can affect the impact and effectiveness of communication and convey different messages and attitudes in various contexts.