Some information in the Guidebook was not very accurate.

accurate 是形容词，意思是"准确的、精确的"。这个词来自拉丁语 accuratus，由前缀 ac-（表示"朝向"）和词根 curare（"小心处理"）组成，字面意思是"经过仔细处理的"，引申为"精确的"。