be as solid as a rock

to be very solid So much furniture these days is so flimsy - this table here was made a hundred years ago and it's solid as a rock.

Name	Pronounced	Usage
HÓLmgeirr	-	Ancient Scandinavian
Nikolas	-	Greek, English
Sisu	SEE-soo	Finnish
Lennard	LEN-ərd	English (Rare)
LuÍSa	loo-EE-zə	Portuguese
Donaldina	dah-nawl-DEE-na	Scottish