| Fou | a little | E.S. (I) | フォウ | Central Standard Note |
| f.p.n. | fall (as rain), downpour | E.V. | ? | Pastalie [Unofficial] |
| f.r.l. | be frightened | E.V. | フルル | New Testament of Pastalie |
| f.s. | whisper | E.V. | エフス | New Testament of Pastalie |
| f.w.r. | accept | E.V. | フウル | New Testament of Pastalie |
| f.w.r.n. | wrap around | E.V. | フウルン | New Testament of Pastalie |
| faf | frightening, creepy | adj. | ファフ | Cult Ciel Note |
| faiy | momentary, instantaneous | adj. | ? | Unknown [Unofficial] |
| faja | advance, progress | v. | ファージャ | Cult Ciel Note |
| falfa | peace | n. | ? | Unknown [Unofficial] |
| famfa | fly (flap wings) | v. | ファンファ | Central Standard Note |
| fanalea | loud, sonorous | adj. | ? | Unknown [Unofficial] |
| fandel | many, numerous things | adj., n. | ファンデル | Metafalss Note |
| fane | affection | n. | ファーネ | Central Standard Note |
| fatele | father | n. | ファテレー | Metafalss Note |
| fatere | if not (x) then (y) | conj. | ファーテレ | Central Standard Note |
| fau | bird | n. | ファウ | Metafalss Note |
| faura | small bird | n. | ファウラ | Metafalss Note |
| fayra | fire, flame | n. | ファイラ | Central Standard Note |
| fedyya | tomorrow | n. | フィディーア | Central Standard Note |
| fee | wind | n. | ? | Unknown [Unofficial] |
| ferda | dwell (as in a home) | v. | フェルダ | Metafalss Note |
| fernia | smile | v. | フェーニャ | Cult Ciel Note |
| fhau | light | n. | ? | Unknown [Unofficial] |
| fhauri | of light | adj. | ? | Unknown [Unofficial] |
| fhyu | wind, breeze | n. | ヒュフ | Central Standard Note |
| firanzia | end of an era, end of the world | n. | ? | Unknown [Unofficial] |
| firga | past | n. | ? | Unknown [Unofficial] |
| firle | feel, sense | v. | フィルレ | Metafalss Note |
| flare | float, levitate | v. | フラレ | Central Standard Note |
| flip | reverse, command for flip-flop conversion | v. | フリプ | Central Standard Note |
| flip | in exchange (for) | prep. | フリプ | Cult Ciel Note |
| fluy | spring, pool (of water) | n. | フリュイ | Central Standard Note |
| focs | deep, thick | adj. | ? | Unknown [Unofficial] |
| fogabe | forgive, pardon | v. | フォーゲイブ | Central Standard Note |
| folten | before (directional), in front | prep. | フォルテン | Central Standard Note |
| forgandal | because of...(!) | conj., prep. | フォーガンダル | Cult Ciel Note |
| forlindel | village leader | n. | フォーリンデル | Cult Ciel Note |
| forlinden | village | n. | フォーリンデン | Cult Ciel Note |
| foul | wonder, mystery, miracle | n. | フォウル | Cult Ciel Note |
| fountaina | cover, bury, submerge | adj., v. | ファウンティナ | Central Standard Note |
| fowrlle | comfort, rest, relaxation | n., v. | フォワール | Central Standard Note |
| frawr | flower | n. | ラーワ | Central Standard Note |
| frawrle | springtime | n. | ラワール | Cult Ciel Note |
| frissoner | shiver | v. | フリッソネア | Central Standard Note |
| frreie | release | v. | ? | Unknown [Unofficial] |
| fs | breeze | n. | フス | New Testament of Pastalie |
| ftt | vanish | v. | フッ | Central Standard Note |
| fulual | receive (as having a wish come true) | v. | フルアル | Central Standard Note |
| fusya | wrap | v. | フーシャ | Central Standard Note |
| futare | future | n., prep. | フターレ | Central Standard Note |
| fwal | wing | n. | フワル | Cult Ciel Note |
| fwillra | feather, down | n. | フィラ | Cult Ciel Note |
