-adjective

being only partly in existence or operation : incipient; especially : imperfectly formed or formulated : formless, incoherent

1 a : having no definite form : shapeless (an amorphous cloud mass) 

b : being without definite character or nature : unclassifiable (an amorphous segment of society) 

c : lacking organization or unity (an amorphous style of writing)
2 : having no real or apparent crystalline form (an amorphous mineral)

-adjective

1 : of, relating to, or resembling a nebula : nebular
2 : indistinct, vague

-adjective

: not tangible : impalpable (education's intangible benefits)

-noun

1 : an implied or indirect reference especially in literature; also : the use of such references
2 : the act of alluding to or hinting at something

-noun

1 : simultaneous and contradictory attitudes or feelings (as attraction and repulsion) toward an object, person, or action
2 a : continual fluctuation (as between one thing and its opposite) 

b : uncertainty as to which approach to follow

-adjective

1 : secret, occult
2 a : having or seeming to have a hidden or ambiguous meaning : mysterious (cryptic messages) 

b :marked by an often perplexing brevity (cryptic marginal notes)
3 : serving to conceal (cryptic coloration in animals); also : exhibiting cryptic coloration (cryptic animals)
4 : not recognized (a cryptic infection)
5 : employing cipher or code

-noun

1 : subtly deceptive reasoning or argumentation
2 : sophism

-adjective

1 a : incapable of being expressed in words : indescribable (ineffable joy) 

b : unspeakable (ineffable disgust)
2 : not to be uttered : taboo (the ineffable name of Jehovah)

-adjective

1 : of illegitimate birth : bastard
2 : outwardly similar or corresponding to something without having its genuine qualities : false (the spurious eminence of the pop celebrity)
3 a : of falsified or erroneously attributed origin : forged 

b : of a deceitful nature or quality (spurious excuses)