to choose not to participate in something
выбрать не участвовать в чем-то (vybrat' ne uchastvovat' v chem-to)
"You can opt out of the newsletter at any time."
"Вы можете отказаться от рассылки в любое время." (Vy mozhete otkazat'sya ot rassylki v lyuboye vremya.)
to be extremely determined to defeat or punish someone
to enjoy yourself by dancing or celebrating
Refusing to answer a question
to make a very serious promise that something is true
a situation where all parties benefit
very high speed; extremely fast progress
