| DEFEASIBILITY | • defeasibility n. State or instance of being defeasible. • DEFEASIBILITY n. the quality of being defeasible. |
| DEFENSIBILITY | • defensibility n. The state or quality of being defensible. • DEFENSIBILITY n. the quality of being defensible. |
| DIFFUSIBILITY | • diffusibility n. (Physics, of a gas or other fluid) A measure of the speed of diffusion. • diffusibility n. (Figuratively, e.g. of a disease) Capacity for spreading. • DIFFUSIBILITY n. the state of being diffusible. |
| FALLIBILITIES | • fallibilities n. Plural of fallibility. • FALLIBILITY n. liability to err. |
| FEASIBILITIES | • feasibilities n. Plural of feasibility. • FEASIBILITY n. the state of being feasible. |
| FIBRILLATIONS | • fibrillations n. Plural of fibrillation. • FIBRILLATION n. uncoordinated contraction of muscle-fibres in the heart. |
| FILIBUSTERING | • filibustering v. Present participle of filibuster. • filibustering n. The act of one who filibusters. • FILIBUSTERING n. obstructing legislation by making long speeches. |
| FILIBUSTERISM | • filibusterism n. (Dated) Piracy, freebooting; the waging of unauthorised war. • filibusterism n. (US) The practice of forcefully and unauthorisedly acquiring control of foreign land. • filibusterism n. The practice of delaying legislation by filibuster or other obstructive tactics. |
| FISHABILITIES | • FISHABILITY n. the state of being fishable. |
| FLEXIBILITIES | • flexibilities n. Plural of flexibility. • FLEXIBILITY n. the state of being flexible. |
| FORCIBILITIES | • FORCIBILITY n. the quality of being forcible. |
| FORMABILITIES | • formabilities n. Plural of formability. • FORMABILITY n. the quality of being formable. |
| FUNGIBILITIES | • fungibilities n. Plural of fungibility. • FUNGIBILITY n. the state of being fungible. |
| INFALLIBILIST | • infallibilist n. One who accepts infallibilism (any sense). • INFALLIBILIST n. one who believes in the Pope's infallibility. |
| INFEASIBILITY | • infeasibility n. The state of being infeasible or impractical. • INFEASIBILITY n. the state of being infeasible. |
| INFIBULATIONS | • infibulations n. Plural of infibulation. • INFIBULATION n. the act of fastening with ring, clasp or stitches to prevent sexual intercourse. |