11-Letter Words Containing: I,R,P,S

• pose a threat to; present a danger to

• put at risk

• a dry dehiscent fruit that at maturity splits into two or more parts each with a single seed

• a boxing match between professional boxers for a cash prize

• box for a prize or money

• the prevention of disease

• the position of vizier

• The soil region subject to the influence of plant roots and their associated microorganisms

• To emphasize again; to reiterate.

• cause (a compound) to polymerize

• undergo polymerization