foremast, thâu-ûi.
foremost, thâu-tsôiⁿ; siãng-soiⁿ.
forenoon, chiēⁿ-kùa; chiēⁿ-ngóu.
forerunner, tsôiⁿ-khu.
foresail, thâu-phâng.
foresee, soiⁿ-kièn; soiⁿ-kak; soiⁿ-tsai; ṳ̃-liāu; ṳ̃-pī.
forest, chhiū-lîm; chhiū-nâⁿ.
foretell, soiⁿ-tàⁿ; ṳ̃-ngân; ṳ̃-soiⁿ-tàⁿ.
forewarn, ṳ̃-soiⁿ kéng-kài.
forfeit, hu̍at-ngṳ̂n. one's life, tì-sí. money to government, e.g. bail, siau-ji̍p kuaⁿ-khòu.
forge, metal, tuãn-liēn. name, ké-miâⁿ tshut-toaⁿ; ké-pit-chiah. a will, ké-li̍p zũi-tsok; ngũi-li̍p zũi-tsok.
forget, m̄-kìⁿ-tit; m̄-kièn-tit; buâng-kìⁿ; buâng-tiāu. forgetful, bô-kì-tshâi; bô-kì-tî; bô-kì-sèⁿ.
forgive, sià; sià-mién; sià-tsũe. mutually, siang-sù siang-sià.
fork, chhe. forked, a-chhe; khui-a; kâu-kê.
forlorn, kou-to̍k; bô hó-uá-pn̄g; bô hó-íⁿ-kõu; bô-nâng hó-kau-tshap.
form, iēⁿ; môⁿ-iēⁿ; hêng; hêng-siãng; hêng-tsuãng; hêng-sièⁿ; hêng-mãuⁿ; hêng-iông; hêng-thói; khuán; khuán-sek. according to, chiè-iēⁿ; chiè-thói-sek. to form, tsò; tsãu; tshàng; sêng. a resolution, li̍p-ì; li̍p-tiāⁿ tsú-ì. seed, kat-chí; kit-chí. a friendship, kat-iú; kau-iú; kat-kau. a conspiracy, kat-táng. a plot, siet-kòi-mông.
formality, lói; lói-siàu; lói-bûn. empty, hṳ-lói; hṳ-bûn; chip-gūa-lói.
formerly, tshông-tsôiⁿ; soiⁿ-tsôiⁿ; tsôiⁿ-sî; tsá-sî; tsá-ji̍t; tsá-tiâng-sî; tsôiⁿ-ji̍t; soiⁿ-tiâng-sî; soiⁿ-tsá.
formidable, khó-ùi; hó-ùi; lĩ-hāi; hó-hãi-phàⁿ; tshūa-nâng-ùi; tit-nâng-ùi.
formula, thói-sek; huap-sek; tiāⁿ-sek; khuán-sek.
Formosa, Thâi-uân; Tâi-uân; Tang-tou. go to, kùe-tou.
fornication, kan-îm; kan-îm tãu-chhiap; kan nâng chhi-nńg; thong-kan; hûa-kan; kiâⁿ-îm. by stealth, sai-chhêng; sai-thong; thau-îm. by force, khiâng-kan; khiâng-îm. by persuasion, pek-kan. with a harlot, phiâu-chhiang. fornicator, kan-hu. fornicatress, kan-hũ; îm-hũ; îm-nńg (unmarried).