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to become gradually weaker or less important ลดลงเรื่อย
UDD chairwoman Tida Tawornseth warned that Pheu Thai could see its support waning if the group's demands for justice are not met.
Many believe that the party's influence will wane while the bargaining power of the other parties will increase.
Kasikorn Research Center in 2008 estimated that 40 billion baht a year circulated in the amulet business, even though the Jatukarm Ramathep amulet craze of a few years earlier was on the wane by that time.