15-Letter Words Containing: _,_,F,F,S,U

• in an ineffective manner

• A technique used to detect the reaction between an antigen and an antibody by observing the behavior of a combination of such species as they diffuse through a gel

• a lack of competence

• (pathology) inability of a bodily part or organ to function normally

• lack of an adequate quantity or number

• the bearing of fruit

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

• the quality of being frightful

• capacity or power to produce a desired effect

• the quality of requiring deliberate effort

• aggressiveness as evidenced by intruding; by advancing yourself or your ideas without invitation