cryptical：神秘的；有隐义的；令人难以理解的；<动>隐藏的；有保护色的 

词根词缀： -crypt-隐藏,秘密 + -ical形容词词尾

• cosmopolitanism
• cosmos
• cosponsor
• cosset
• cost
• costal
• costard
• textbook
• textile
• textual
• texture
• thalamus
• thallium
• thallus
• Thames
• than
• thanato-
• thanatology
• Thanatos
• thank
• thankful
• thankless
• thanks
• thanksgiving
• thank you