KEY: Abstruse.
SYN: Hidden, recondite, difficult, profound, deep, curious, obscure,mystical, occult, hard, dark.
ANT: Patent, popular, superficial, simple, obvious, trite,intelligible, lucid, plain, easy, manifest, clear.

• Categorical
• Category
• Causality
• Causation, [See CAUSALITY]
• Cause
• Cause \r
• Caustic
• Caution
• Cautious, [See CIRCUMSPECT]
• Cavalier \a
• Caviller, [See CAVIL]
• Cavil, [See CARP]
• Cavity, [See OPENING]
• Cease
• Ceaseless, [See CEASE]
• Cede, [See RELINQUISH]
• Celebrated
• Celebrate, [See HONOR]
• Celebration
• Celebrity
• Celerity
• Celestial
• Cement
• Censorious, [See CAPTIOUS]
• Censure