arachnidian vs spidery

arachnidian and spidery both are adjectives.

Word	Noun	Adjective	Verb	Adverb
arachnidian	No	Yes	No	No
spidery	No	Yes	No	No

As adjectives, arachnidian and spidery are synonyms defined as:

arachnidian and spidery: relating to or resembling a member of the class Arachnida

Other synonyms of arachnidian include arachnoid, spiderlike, spiderly.

arachnidian (adjective)	spidery (adjective)
relating to or resembling a member of the class Arachnida	relating to or resembling a member of the class Arachnida