(cause something to) become dark

become shaded, unlit

to cause (feelings, sound etc) to lose strength, brightness

diminish, muffle, quiet

(to cause something) to lose colour, freshness or strength

lose color

to make (anger, punishment etc) less serious or severe

check, diminish, lighten

to wrap or cover (a person, thing) for warmth or protection; to cover (a machine etc) to reduce the sound it makes

suppress, make quiet

to make (something), become, smaller in size, number, degree, price etc

make less; decrease

(to cause something) to become soft etc; (to cause a person) to become kind, sympathetic etc

calm, soothe

to bring (an angry person, a strong feeling etc)

keep under control; moderate