The official spokesperson has consistently denied all allegations of misconduct.

consistently 是副词，由形容词 consistent（一贯的、一致的）加上副词后缀 -ly 构成。consistent 来自动词 consist（由...组成），引申为"始终如一的"。 consistently 表示"一贯地、始终如一地"，强调行为或态度在不同时间点保持相同。