Real Dictionary

joined-up
In joined-up writing, you join all the letters in each word together, without taking your pen off the paper. This sort of writing is used by older children and adults.
Journalists sometimes use joined-up to describe plans, ideas, or organizations which seem sensible, sophisticated, and mature, especially when they think that they have been unsophisticated or immature in the past.

joined-up in British English
adjective: with all departments or sections communicating efficiently with each other and acting together purposefully and effectively