extraneous

adj. 外来的，无关的

extirpate, extirpation, extol, extort, extortion, extortionate, extortionately, extortioner, extortionist, extra, extra-, extra-curricular, extra-marital, extra-sensory perception, extract, extraction, extractor, extradite, extradition, extramural, extraordinarily, extraordinary, extrapolate, extrapolation, extraterrestrial, extraterritorial, extravagance, extravagant, extravagantly, extravaganza, extreme, extremely, extremism, extremist, extremity, extricable, extricate, extrinsic, extroversion, extrovert,