to intentionally ignore someone
わざと誰かを無視する (wazato dareka o mushi suru)
"She gave me the cold shoulder at the party."
"彼女はパーティーでわざと私を無視した。" (kanojo wa paatii de wazato watashi o mushi shita)
to stop talking or thinking about something stressful
to trust someone completely
to keep feelings inside and not express them
to be open and honest in your actions
by lying or misleading someone
to be so surprised that you doubt what you are seeing