nostalgia

1. A longing for home or familiar surroundings; homesickness.
2. A bittersweet yearning for the things of the past.

isn't

• Verb

  Contraction of is not. (negative auxiliary)

• Noun

what

• Det

  1. Which, especially which of an open-ended set of possibilities.
  2. Which.
  3. Any ... that; all ... that; whatever.
  4. Emphasises that something is noteworthy or remarkable in quality or degree, in either a good or bad way; may be used in combination with certain other determiners, especially 'a', less often 'some'.
  5. Emphasises that something is noteworthy or remarkable in quality or degree, in either a good or bad way; may be used in combination with certain other determiners, especially 'a', less often 'some'.

• Pron
• Adv
• Intj
• Noun
• Particle

it

• Pron

  1. The third-person singular neuter personal pronoun used to refer to an inanimate object, abstract entity, or non-human living thing.
  2. A third-person singular personal pronoun used to refer to a baby or child, especially of unknown gender.
  3. (obsolete) An affectionate third-person singular personal pronoun.
  4. A third-person singular personal pronoun used to refer to an animate referent who is transgender or non-binary.
  5. Used to refer to someone being identified, often on the phone, but not limited to this situation.
  6. The impersonal pronoun, used without referent as the subject of an impersonal verb or statement (known as the dummy pronoun, dummy it or weather it).
  7. The impersonal pronoun, used without referent, or with unstated but contextually implied referent, in various short idioms or expressions.
  8. The impersonal pronoun, used without referent, or with unstated but contextually implied referent, in various short idioms or expressions.
  9. The impersonal pronoun, used without referent, or with unstated but contextually implied referent, in various short idioms or expressions.
  10. Sex appeal, especially that which goes beyond physical appearance.
  11. The impersonal pronoun, used as a placeholder for a delayed subject, or less commonly, object; known as the dummy pronoun (according to some definitions), anticipatory it or, more formally in linguistics, a syntactic expletive. The delayed subject is commonly a to-infinitive, a gerund, or a noun clause introduced by a subordinating conjunction.
  12. All or the end; something after which there is no more.
  13. (obsolete) Followed by an omitted and understood relative pronoun: That which; what.

• Det
• Noun
• Adj

used to

• Adj

  Accustomed to, tolerant or accepting of.

• Verb

be

• Verb

  1. As an auxiliary verb:
  2. As an auxiliary verb:
  3. As an auxiliary verb:
  4. As an auxiliary verb:
  5. As an auxiliary verb:
  6. As a copulative verb:
  7. As a copulative verb:
  8. As a copulative verb:
  9. As a copulative verb:
  10. As a copulative verb:
  11. As a copulative verb:
  12. As a copulative verb:
  13. As a copulative verb:
  14. As a copulative verb:
  15. As a copulative verb:
  16. As a copulative verb:
  17. As a copulative verb:
  18. As an intransitive lexical verb:
  19. As an intransitive lexical verb:
  20. As an intransitive lexical verb:
  21. As an intransitive lexical verb:
  22. As an intransitive lexical verb:

• Prep
• Noun

to

• Particle

  1. A particle used for marking the following verb as an infinitive.
  2. As above, with the verb implied.
  3. Used to indicate an obligation on the part of, or a directive given to, the subject.
  4. In order to.

• Prep
• Adv

used

• Verb

  1. simple past and past participle of use
  2. To perform habitually; to be accustomed [to doing something].

• Adj