The term "substantially engaged" is correct and usable in written English.
You could use this phrase to describe either a person or a thing that is actively involved in an activity or process. For example: "The students were substantially engaged in their research."
Rather, we took a practical view – that the military is already substantially engaged in development activities in Afghanistan and other conflict zones.
Fraser's penetrating intellect is her medium of choice, and she uses it to tackle tough topics others would prefer to avoid (she is one of the few artists to have substantially engaged with post-recession income inequality, with the brilliant 2011 text L'1%, C'est Moi).
But the moms group is "substantially less engaged" on Google+ than others, SocMetrics found.
Course papers must directly and substantially critically engage with one or more of the assigned readings for our course.
Expanded description of written work: Course papers must directly and substantially critically engage with one or more of the assigned readings for our course.
Amidst the general uncertainty of New York's operatic scene, the Prototype Festival, an annual explosion of youthful energy spearheaded by Beth Morrison Projects and the experimental theatre space HERE, has built a clearly defined profile: brash, socially engaged, and substantially post-classical.
They draw on extensive evidence that fossil fuel companies, knowing that their products contributed substantially to climate change, engaged for decades in a coordinated campaign to publicly disparage climate science to avoid limits on emissions.
"Over the past few years, most major multinational companies have increased their investments in the sector substantially and are increasingly engaged in R&D activities.
We should note that the present study engaged a substantially broader data set and more diverse methods for tree construction.
In the 1960s, this was the hope expressed by the likes of Ballard, Aldiss and others of us around New Worlds magazine who despaired of conventional literature's inability to engage substantially with the modern world and thought to experiment with the subject matter and methods of imaginative fiction.
In short, America would have to recommit itself to re-engage substantially in Iraq.
