arachnidian vs spiderlike

arachnidian and spiderlike both are adjectives.

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

As adjectives, arachnidian and spiderlike are synonyms defined as:

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

Other synonyms of arachnidian include arachnoid, spiderly, spidery.

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