to visit someone informally or without prior notice
誰かを非公式に、または事前の通知なしに訪れる (dareka o hikōshiki ni, matawa jizen no tsūchi nashi ni otozureru)
"Feel free to drop by anytime for a cup of tea."
"いつでもお茶を飲みにdrop byしても大丈夫です。" (Itsudemo ocha o nomini **drop by** shite mo daijōbu desu.)
to get on a vehicle quickly or easily
to aim to be the best at something
to take strong action to stop something harmful or illegal
to do something that one has missed or delayed doing before...
to insistently demand something
to surprise or shock someone
