PENETRANTS Antonyms

• a structure or object that impedes free movement

• any condition that makes it difficult to make progress or to achieve an objective

• anything serving to maintain separation by obstructing vision or access

• a football player whose responsibility is to block players attempting to stop an offensive play

• a class of drugs that inhibit (block) some biological process

• a substance that retards or stops an activity

• a material such as glass or porcelain with negligible electrical or thermal conductivity

• someone who systematically obstructs some action that others want to take

• any structure that makes progress difficult

• a compound with which fabrics are treated to repel water

• a chemical substance that repels animals

• the power to repel

• serving or tending to repel

• highly offensive; arousing aversion or disgust

• incapable of absorbing or mixing with

• a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface)