15-Letter Words Containing: T,I,F,F,_

• The quality of being difficult to delete, remove, wash away, blot out, or efface.

• lacking the power to be effective

• power to be effective; the quality of being able to bring about an effect

• capacity to produce strong physiological or chemical effects

• A device that uses diffraction (especially X-ray diffraction) to investigate the structure of matter.

• a disposition to be distant and unsympathetic in manner

• the bearing of fruit

• organs of fruiting (especially the reproductive parts of ferns and mosses)

• the quality of being frightful