in·to 
/ˈɪntu, ˈɪntə/ preposition
/ˈɪntu, ˈɪntə/ preposition 1 : to or toward the inside of (something)
▪ She came into the room/house. ▪ a medicine injected into the bloodstream ▪ Please put the bowl into the sink/cupboard. ▪ They were heading into town. ▪ He jumped into the pool. 2 : in the direction of (something)
▪ You should never look directly into [=toward] the sun. ▪ She was just staring into space. ▪ peering/looking into the past/future 3 — used to describe hitting or touching something or someone ▪ He ran into [=against] a wall. ▪ She bumped into me. 4 : to the state, condition, or form of (something)
▪ She was shocked into silence. ▪ come into being/existence ▪ as day turns into night ▪ I got into trouble again. ▪ her slow descent into madness ▪ converting sunlight into electricity ▪ He translated the poem from Latin into English. ▪ change dollars into euros ▪ breaking up into smaller pieces 5 a — used to say that something or someone has become a part of something ▪ They entered into an alliance. ▪ He was born into a once-proud family.
b — used to say that someone has become involved in something (such as a profession) ▪ She wants to get into politics. ▪ He decided to go into farming. [=he decided to be a farmer]
c — used to say that someone has been forced or persuaded to do something ▪ He was pressured into doing this by his boss. ▪ I was talked into joining the class. 6 informal — used to say that someone is interested in and excited about (something) ▪ He was never into sports. ▪ I'm really into her music. ▪ I usually enjoy her books, but I just couldn't get into this one. 7 — used to say how long something lasts ▪ The party continued well/far/long/late into the night. ▪ This snow should last well into the spring. ▪ The heat wave will continue into next week. 8 : relating to or concerning (something)
▪ an investigation into the causes of the accident 9 — used to describe dividing one number by another number ▪ Six goes into 18 three times. ▪ Dividing 3 into 6 gives 2.
▪ She came into the room/house. ▪ a medicine injected into the bloodstream ▪ Please put the bowl into the sink/cupboard. ▪ They were heading into town. ▪ He jumped into the pool.
▪ You should never look directly into [=toward] the sun. ▪ She was just staring into space. ▪ peering/looking into the past/future
▪ She was shocked into silence. ▪ come into being/existence ▪ as day turns into night ▪ I got into trouble again. ▪ her slow descent into madness ▪ converting sunlight into electricity ▪ He translated the poem from Latin into English. ▪ change dollars into euros ▪ breaking up into smaller pieces
b — used to say that someone has become involved in something (such as a profession) ▪ She wants to get into politics. ▪ He decided to go into farming. [=he decided to be a farmer]
c — used to say that someone has been forced or persuaded to do something ▪ He was pressured into doing this by his boss. ▪ I was talked into joining the class.
▪ an investigation into the causes of the accident
be into (someone) for
US, informal : to owe someone (an amount of money)
▪ I'm into him for a thousand dollars.
▪ I'm into him for a thousand dollars.
