highly - very, extremely
ex. He is highly educated. He's got two MAs.
high - at a distance above the ground
ex. I have to jump high to reach the top shelf.
hardly - almost not at all
ex. I hardly ever see John these days. He stays at the office longer.
hard - not easy, with a great deal of effort
ex. Everybody works hard this semester to keep the project going.
lately - recently, not long ago
ex. She has been working out a lot lately. She has lost a lot of weight.
late - after the expected time
ex. My wife will come home late today, so we will go to a restaurant for dinner.