éénopéén
éénopéén is a nonstandard concatenation of the Dutch expression één op één, which translates to one on one or one-to-one in English. It is not part of formal Dutch spelling, but appears in branding, advertising, and informal writing as a compact label for direct, individualized interaction.
Etymology and form: The standard phrase consists of three words: één (one), op (on), and één (one).
Usage: In practice, één op één describes activities conducted with a single participant or client, such as
Orthography and style: Dutch orthography generally requires spaces in standard usage. The concatenated version is stylistic
See also: één op één; one-on-one; individualized instruction; coaching; tutoring.