Terms for subject Informal containing theory

English	Russian
cry down smb.'s theory	принижать значение чьей-л. теории (his initiative, their achievement, her success, every attempt to do smth., etc., и т.д.)
cry down smb.'s theory	преуменьшать значение чьей-л. теории (his initiative, their achievement, her success, every attempt to do smth., etc., и т.д.)
cry down smb.'s theory	поносить чью-л. теорию (his initiative, their achievement, her success, every attempt to do smth., etc., и т.д.)
unconvincing theory	теорийка
useless theory	теорийка