rampant

raging; unchecked

ratify

accept; approve; sign

rationale

reason; thinking

receive

get

recipient

person who gets

reciprocate

give in kind; return; share

recognize

see; accept; know; notice

recover

get back; get better; improve; get well

recuperate

get better; get well

recur

come back

reduce

bring down; cut

redundant

extra; not needed

regimen

diet; rule; system

register

sign up

regulate

control; restrict; watch over

regulation

bylaw; law; rule

rehabilitate

bring back; restore

reimburse

pay back; refund

reinforce

strengthen

reiterate

repeat; say again

relevant

important

remainder

others; rest

remark

say

replica

copy; model

representative

agent

reprimand

give a warning (verb); scold (verb); warning (noun

require

ask for; call for; need

requirements

needs

rescind

cancel; set aside; take away; take back

reside

be in; live

residence

apartment; home; house

respond

answer; reply

restrain

check; hold back; stop

retain

keep

retrieve

bring back; get back

reveal

show; uncover

review

check; go over