only (EN)
adjective, adverb, conjunction

adjective “only”

only, non-gradable
  1. the sole member or example in its category
    She was the only person in the theater.
  2. having no siblings or no siblings of the same sex
    After three daughters, they finally had an only son.

adverb “only”

only
  1. solely or exclusively
    It's mine, and mine only.
  2. merely or just
    The puppy only chewed on his toy, not the furniture.
  3. as recently as
    I only started reading the book yesterday.
  4. used to express a contrast where an outcome negates what was expected
    He studied all night for the exam, only to oversleep and miss it.

conjunction “only”

only
  1. used to introduce an exception or condition
    I'd love to join you for dinner, only I already have plans.