| ChronicleKey | Hymmnos - ChronicleKey | n. | クロニクルキー | Alpha Note (EOLIA) |
| c.z. | transform | E.V. | スズ | New Testament of Pastalie |
| calamila | catastrophe | n. | ? | Unknown [Unofficial] |
| cause | curse, torment | v. | カウゼ | Metafalss Note |
| cecet | shield | n. | ケケト | Central Standard Note |
| ceku | friend, partner, compatriot | n. | セク | New Testament of Pastalie |
| celetille | vivid, clean, clear, lovely | adj. | セレティル | Central Standard Note |
| celle | heavenly | adv. | セルレ | Central Standard Note |
| cenjue | change, transform | v. | チェンジュエ | Metafalss Note |
| cerchio | possibility, probability | n. | チェルキオ | Central Standard Note |
| cest | truth, reality | adj., n. | セスト | Central Standard Note |
| cexm | arrive, visit (person) | v. | セズム | Central Standard Note |
| chanti | praise, reward | n., v. | シャンティ | Central Standard Note |
| chiess | kiss | n., v. | チェス | Central Standard Note |
| chs | become | v. | チス | Central Standard Note |
| chsee | transform into | v. | チーセ | Central Standard Note |
| chyet | chosen, special | adj. | シェッ | Cult Ciel Note |
| cia | sky | n. | シア | New Testament of Pastalie |
| ciel | world, sky | n. | シェール | Central Standard Note |
| ciellenne | air, the skies | n. | シエルレーニェ | Central Standard Note |
| cietta | because, but, although | conj. | ? | Unknown [Unofficial] |
| clalliss | colour | n., v. | クラリス | Central Standard Note |
| clamour | knee, lap | n. | クラマー | Central Standard Note |
| clare | clear, transparent | adj., adv. | クラレ | Central Standard Note |
| clemezen | insane, insanity | adj., n. | クレムゼン | Central Standard Note |
| clyncye | pure, genuine | adj. | クリンシェ | Cult Ciel Note |
| coall | return | v. | ? | Unknown [Unofficial] |
| colga | ice | n. | クオルガ | Central Standard Note |
| colgen | freeze, frozen | adj., v. | ? | Unknown [Unofficial] |
| coree | within my heart | prep. | ? | Unknown [Unofficial] |
| corle | heart | n. | ? | Unknown [Unofficial] |
| corpu | body, flesh | n. | ? | Unknown [Unofficial] |
| crannidale | share | v. | クラニダーレ | Metafalss Note |
| cremia | relief, aid, salvation | n. | ? | Unknown [Unofficial] |
| crown | cup, goblet | n. | ? | Unknown [Unofficial] |
| crudea | anguish, distress | n. | クルーデア | Metafalss Note |
| crushue | create, craft | v. | クルシューエ | Metafalss Note |
| cupla | sin | n. | キュプル | Central Standard Note |
| cyuie | sad, sorrowful | adj. | キュイ | Central Standard Note |
| cyurio | reason, logic, system | n. | キュリオ | Central Standard Note |
