Sentence:  A century ago , Newman saw that liberalism ( what we now might call <WSD>secularism</WSD> ) would gradually but definitely make its mark on English Protestantism , and that even high Anglicanism would someday no longer be a `` serviceable breakwater against doctrinal errors more fundamental than its own '' . 
Meaning of the word marked with <WSD> tags:  a doctrine that rejects religion and religious considerations