tilju -tij- gismu

x1 is heavy/weighty in mass/weight by standard x2.

(cf. linto; carmi, se junri for metaphor, bunda, junta)


In notes:

bunda
x1 is x2 (def. 1) local weight unit(s) [non-metric], standard x3, subunits [e.g. ounces] x4.
carmi
x1 is intense/bright/saturated/brilliant in property (ka) x2 as received/measured by observer x3.
junri
x1 (person) is serious/earnest/has gravity about x2 (event/state/activity).
junta
x1 is the weight of object x2 in [gravitational or other force] field x3.
linto
x1 is light in mass/weight by standard x2.