We found one dictionary that defines the word speak softly:

Types: whisper, murmur, mumble, hush, soft-spoken, low voice, quietly, more... Phrases: speak softly and carry a big stick, to speak softly, more... ▸ Words similar to speak softly ▸ Usage examples for speak softly ▸ Idioms related to speak softly ▸ Wikipedia articles (New!) ▸ Words that often appear near speak softly ▸ Rhymes of speak softly ▸ Invented words related to speak softly