curve -cuv- gismu

x1 is pure/unadulterated/unmitigated/simple in property x2 (ka).

x1 is simply/purely/unmitigatedly/solely x2. See also prane, jinsa, manfo, sampu, sepli, traji, lumci, xukmi.

On gloss:

kruvi
x1 is a curve/turn/bend in x2, at locus x3, and defined by set of points/properties x4.

In definition:

bargu
x1 arches/curves over/around x2 and is made of x3; x1 is an arch over/around x2 of material x3.
selbargu
x2=b1 arches/curves over/around x1=b2 and is made of x3=b3; x2=b1 is an arch over/around x1=b2 of material x3=b3.
terbargu
x3=b1 arches/curves over/around x2=b2 and is made of x1=b3; x3=b1 is an arch over/around x2=b2 of material x1=b3.

In notes:

cidni
x1 is a/the knee/elbow/knuckle [hinged joint, body-part] of limb x2 of body x3.
clupa
x1 is a loop/circuit of x2 [material].
jinsa
x1 (object) is clean/pure of material/contaminant/dirt x2 by standard x3.
lumci
x1 (agent) washes/cleanses x2 of soil/contaminant x3 in/with cleaning material(s) x4.
manfo
x1 (object/event) is uniform/homogeneous in property x2 (ka).
prane
x1 is perfect/ideal/archetypical/faultless/flawless/un-improvable in property/aspect x2 (ka).
sampu
x1 is simple/unmixed/uncomplicated in property x2 (ka).
sepli
x1 is apart/separate from x2, separated by partition/wall/gap/interval/separating medium x3.
traji
x1 is superlative in property x2 (ka), the x3 extreme (ka; default ka zmadu) among set/range x4.
xukmi
x1 is an instance of substance/chemical/drug x2 (individual or mass) with purity x3.