light (topic, book, etc.); informal

informal; light; flexible (e.g. thinking)

flexible; lithe; soft; pliable

judo

to soften; to calm down; to be eased; to be mitigated; to subside; to abate

obedient; gentle; meek; submissive; docile

gentle; mild; meek; tender

indecisive; irresolute; shilly-shally; vacillating

cuttlefish; squid

winning over; placation; gentle persuasion

calisthenics

smiling; beaming; radiant; bright; cheerful