suggestible
adjective formal disapproving uk/səˈdʒes.tə.bəl/ us/səˈdʒes.tə.bəl/
易受影响的，易被他人左右的
A suggestible person is easily influenced by other people's opinions.
The success of advertising proves that we are all highly suggestible. 广告活动的成功证明我们都很容易受他人影响。