Chinese words with 固 character meaning (HSK)

固定

GU4, DING4
fixed, set, regular

根深蒂固

GEN1, SHEN1, DI4, GU4
deep-rooted (problem etc)

巩固

GONG3, GU4
to consolidate, consolidation, to strengthen

固然

GU4, RAN2
admittedly (it's true that...)

固体

GU4, TI3
solid

固有

GU4, YOU3
intrinsic to sth, inherent, native

固执

GU4, ZHI5
persistent, stubborn

坚固

JIAN1, GU4
firm, firmly, hard, stable

牢固

LAO2, GU4
firm, secure

凝固

NING2, GU4
to freeze, to solidify, to congeal, fig. with rapt attention

顽固

WAN2, GU4
stubborn, obstinate