Well, maybe the car is the most important (in terms of impact), but air conditioning comes close, and for much more subtle reasons.

He needs to try to see the subtler reasons for this mood.

Yet there is another, more subtle reason for the reprise.

But there is also a more subtle technical reason.

But there is a more subtle reason to be wary of any major supply disruption.

That seemed more likely to Berkowitz for two subtle reasons.

But more often you hold back on printing something everyone knows for a subtler reason.

There must be some good, and fairly subtle, reason for it.

But there's another, far subtler reason that has to do with accuracy.

But for many others it offers an additional, subtler reason to leave.