growing
The scheme was entwined with the growingly controversial area of party funding.
The manager pleaded with the growingly disillusioned fans not to lose faith in the club's star player.
Cheaper operating systems were growingly popular in other parts of the world.
The builders face a growingly vociferous opposition to construction on the land.
Then, growingly, things started to become strange.

SMART Vocabulary: related words and phrases

Increasing and intensifying
accretion
accumulate
accumulative
accumulatively
add fuel to the fireidiom
blaze
fade
go into orbitidiom
go up
growing
heighten
hot up
inflation
mushroom
ratchet something up/down
re-escalate
re-escalation
reach a crescendo
redouble
stake