behindhand
adverb, adjective UK formal uk/bɪˈhaɪnd.hænd/ us/bɪˈhaɪnd.hænd/
迟地，慢地
late in doing something or slower doing something than expected
I worked late last night because I was behindhand with my accounts. 我因为账算得慢，所以昨天工作到了深夜。
Synonym: behind