eclipse

noun
1
an occasion when the moon passes between the earth and the sun so that you cannot see all or part of the sun for a time; an occasion when the earth passes between the moon and the sun so that you cannot see all or part of the moon for a time
کسوف, خسوف
2
a loss of importance, power, etc. especially because somebody/something else has become more important, powerful, etc.
افول, زوال, افت اهمیت
The election result marked the eclipse of the right wing.
Her work was in eclipse for most of the 20th century.
verb
1
to cause an eclipse of the sun or the moon
گرفتن (خورشید/ماه), کسوف کردن, خسوف کردن
2
to make somebody/something seem neither exciting nor important by comparison
تحت‌الشعاع قرار دادن, از اهمیت انداختن
Though a talented player, he was completely eclipsed by his brother.
synonym outshine, overshadow