simple past tense and past participle of round down

(idiomatic) To wait; to stop pursuing, stop fighting, or relax from a heightened readiness posture. / (transitive, intransitive) To withdraw or retire from a position or from a team.

(transitive) To hit someone with a car or other vehicle and injure or kill them. / (transitive) To criticize someone or an organisation, often unfairly.

(idiomatic) Thoroughly practiced, rehearsed, or understood; mastered.

(intransitive) To become less excited, intense, or angry. / (transitive) To cause to become less excited, intense, or angry.

simple past tense and past participle of lay down

(transitive, intransitive, idiomatic) To relax; to make quieter or less obtrusive; to make milder. / To moderate or relax; to diminish or weaken the striking characteristics of; to soften.

To kneel, especially as an act of reverence or prayer.

Of or relating to a hierarchical system that progresses from a single, large basic unit to multiple, smaller subunits. / Produced, controlled, or directed by those at the top of the hierarchy.

(transitive) To treat or polish with sandpaper.