Sentence examples for but difficult to define from inspiring English sources

It's an important issue, but difficult to define.

It was meant to be the elusive key to a problem that seemed easy to understand but difficult to define.

Once you decide that character is definitive but difficult to define, even anecdotes about Lowell, long scattered in various sources, begin to talk to one another.

"Social capital" is very important but difficult to define and analyze.

As Heckman notes, causality is naturally intuitive but difficult to define.

The sense of cultural loss and a lack of direct relationship with the origins of what consumers eat often lead people to look for forms of "tradition" and "authenticity". Both are powerful but difficult to define and highly contextual qualities that are now attributed to many foods.

Environmental interventions, however, had small but positive effects in much larger but more difficult to define populations.

It is easy to recognise, but fiendishly difficult to define.

But charm remains maddeningly difficult to define, but ever so easy to detect, especially in its absence.

But justice is difficult to define and still more difficult to achieve.

Wallinger has been working as an artist for 30 years, but he remains difficult to define.