to give evidence in court against someone
किसी के खिलाफ कोर्ट में गवाही देना (kisi ke khilaf court mein gawahi dena)
"The witness agreed to testify against the accused."
"गवाह ने आरोपी के खिलाफ गवाही देने पर सहमति दी।" (Gawah ne aaropi ke khilaf gawahi dene par sahmati di.)
to make conscious efforts to improve your personality, habit...
to make sure someone is safe or doing well
to lower the amount of money spent
to focus your mind on what is real to reduce panic or anxiet...
to encourage someone by showing support or enthusiasm
to support or strengthen something that is weak or unstable