to be so surprised that you cannot speak
estar tan sorprendido que no puedes hablar (estar tan sorprendido que no puedes hablar)
"I was lost for words when I won the prize."
"Me quedé sin palabras cuando gané el premio." (Me quede **sin palabras** cuando gane el premio)
to stop being involved in or responsible for something
to join an activity quickly
to be giving testimony in court
outside the planned or expected area of focus
a person with strong purpose and determination to achieve so...
clear and straightforward; no room for confusion