(of the way in which someone is speaking) in whispers / (of the way in which someone is speaking) in an undertone / (of the way in which someone is speaking) secretly / (of the way in which someone is speaking) in a low voice / (of the way in which someone is speaking) in confidence

whispering

conceal *oneself / be in hiding / hide

become still / become quiet / be hushed

conceal *oneself / hide *oneself

lower *one's voice / speak quietly / speak in a low voice / drop *one's voice

keep *something to *oneself / hide [an emotion] / have [a feeling] in *one's heart / feel *something secretly

take shelter in / take shelter under / be evacuated

fleshiness / getting fat / get fat / corpulence

getting enlarged / hypertrophy / get hypertrophied / get swollen / getting swollen / get enlarged / enlarged / hypertrophied / getting hypertrophied / swollen / corpulent / hypertrophic / corpulence