With 2,500 to 3,000 words, you can understand 90% of everyday English conversations, English newspaper and magazine articles, and English used in the workplace. The remaining 10% you'll be able to learn from context, or ask questions about. However, it's essential to learn the right English vocabulary words, so you don't waste your time trying to memorize a huge collection with very little benefit. The list below seems long, but when you can use all these words with confidence, your English vocabulary will be fully functional.
a
abandon
ability
able
abortion
about
above
abroad
absence
absolute
absolutely
absorb
abuse
academic
accept
access
accident
accompany
accomplish
according