Sentence:  Thenne herd he a voyse say / Galahad I see there enuyronne aboute the so many angels that my power may not <WSD>dere</WSD> the /<!--Prior quoteThan herde he a voyce sey, ‘Sir Galahad, I se there envyrowne aboute the so many angels that my power may nat deare the!'--> 
Meaning of the word marked with <WSD> tags:  To hurt; harm; injure; wound.