Sentence:  What neede we any ſpurre, but our owne cauſe / To pricke vs to redreſſe? What other Bond / Than <WSD>ſecret</WSD> Romans, that haue ſpoke the Word, / And will not palter? 
Meaning of the word marked with <WSD> tags:  Faithful to a secret; not inclined to divulge or betray confidence; secretive, separate, apart.