definition
Without intention; accidentally:
sentence
During a recent ultrasound, the young couple inadvertently learned something they’d planned to keep a surprise: the sex of their baby.
She doesn’t exclude the possibility that going back to right such wrongs might inadvertently set some other horrible chain of events into motion.
difficulty
medium
toefl frequency
2
toefl classification
adverb
inadvertently
adjective
inadvertent