productive
adj.adj. getting a lot of work done or producing good results. You use this to describe a person, a day, or a meeting that is very useful and successful.
adj. yielding results, benefits, or profits; achieving a high rate of output. In linguistics, it describes a suffix or pattern that is still used to create new words.
I had a very productive morning and finished all my emails.
The two companies had a productive meeting and agreed on a new partnership deal.
While the suffix '-ness' is highly productive in modern English, other endings like '-th' are now largely dormant and no longer generate new vocabulary.
Borrowed from Late Latin productivus, equivalent to product + -ive.
Commonly used with adverbs of degree like 'highly' or 'very'.