value
I would be wary of any funds that seem to appreciate in value significantly without a good reason.
The Japanese currency has appreciated in value against the dollar.
It is not only a beautiful painting, but it will also appreciate in value over the years.

SMART Vocabulary: related words and phrases

Price increases
accrual
added value
anti-inflation
anti-inflationary
appreciate
appreciate by something
bull market
counter-inflation
dead cat bounce
go through the roofidiom
hyperinflation
inflationary
inflationary spiral
put something up
rack
rack something up
rebound
reinflate
reinflation
roof