incessant
Word family nounincessancyincessantnessadverbincessantlyadjectiveincessant
in·ces·sant /ɪnˈsesənt/ adjectiveadj [usually before noun] CONTINUOUScontinuing without stopping 持续不断的,没完没了的 SYN constant The child’s incessant talking started to irritate her. 这孩子喋喋不休,她开始烦躁起来。
—incessantly adverbadv They quarreled incessantly. 他们吵个没完。
Origin incessant (1400-1500) Late Latin Latin cessare “to delay”