(of a liquid )液体 not made weaker by having water added to it; not having been diluted 未掺水的;未稀释的 (of a feeling or quality )感情或品质 not mixed or combined with anything and therefore very strong synonym unadulterated真挚的;纯洁的;浓烈的;醇厚的 I looked back on that time with undiluted pleasure. 我怀着无比的快乐回忆起那段时光。