The Word is:”to”

to

/tə,tʊ,tuː/
preposition
preposition: to

1. expressing motion in the direction of (a particular location).

“walking down to the shops”

  • expressing location, typically in relation to a specified point of reference.
    “forty miles to the south of the site”
  • expressing a point reached at the end of a range or after a period of time.
    “a drop in profits from £105 m to around £75 m”
  • British
    (in telling the time) before (the hour specified).
    “it’s five to ten”
  • 2.approaching or reaching (a particular condition).

    “Christopher’s expression changed from amazement to joy”

  • expressing the result of a process or action.
    “smashed to smithereens”
  • governing a phrase expressing someone’s reaction to something.
    “to her astonishment, he smiled”
  • 3. identifying the person or thing affected by or receiving something.

    “you were terribly unkind to her”

    4.identifying a particular relationship between one person and another.

    “he is married to his cousin Emma”

  • used in various phrases to indicate how something is related to something else (often followed by a noun without a determiner).
    “made to order”
  • indicating a rate of return on something, for example the distance travelled in exchange for fuel used.
    “my car only does ten miles to the gallon”
  • Mathematics
    indicating the power (exponent) to which a number is raised.
    “ten to the minus thirty-three”
  • 5. indicating that two things are attached or linked.

    “he had left his dog tied to a drainpipe”

    6. concerning or likely to concern (something).

    “a threat to world peace”

    7. used to introduce the second element in a comparison.

    “the club’s nothing to what it once was”

    8. placed before a debit entry in accounting.

    infinitive marker
    to: to

    1. used with the base form of a verb to indicate that the verb is in the infinitive, in particular:

  • expressing purpose or intention.
    “I set out to buy food”
  • expressing an outcome or result.
    “she was left to die”
  • expressing a cause.
    “I’m sorry to hear that”
  • indicating a desired or advisable action.
    “I’d love to go to France this summer”
  • indicating a proposition that is known, believed, or reported about a specified person or thing.
    “a house that people believed to be haunted”
  • forming a future tense with reference to the immediate future.
    “he was about to sing”
  • after a noun, indicating its function or purpose.
    “a chair to sit on”
  • after a phrase containing an ordinal number.
    “the first person to arrive”
  • 2. used without a verb following when the missing verb is clearly understood.

    “he asked her to come but she said she didn’t want to”

    adverb
    adverb: to

    1. so as to be closed or nearly closed.

    “he pulled the door to behind him”

    Source credit: Google