The IDVA defines abuse, and further defines many of the terms that are used to define abuse. 

Abuse includes:

• Physical abuse
  • Knowing or reckless use of physical force, confinement or restraint
  • Knowing, repeated and unnecessary sleep deprivation
  • Knowing or reckless conduct which creates an immediate risk of physical harm.
  • Sexual abuse
    
    
• Harassment 
  • Knowing conduct which is
    • Not necessary to accomplish a purpose that is reasonable under the circumstances; 
    • Would cause a reasonable person emotional distress; and 
    • Does cause emotional distress to the petitioner. 
  • Unless the presumption is rebutted by a preponderance of the evidence, the following types of conduct shall be presumed to cause emotional distress:
    • Creating a disturbance at petitioner's place of employment or school;
    • Repeatedly telephoning petitioner's place of employment, home or residence;
    • Repeatedly following petitioner about in a public place or places;
    • Repeatedly keeping petitioner under surveillance by remaining present outside his or her home, school, place of employment, vehicle or other place occupied by petitioner or by peering in petitioner's windows;
    • Improperly concealing a minor child from petitioner, repeatedly threatening to improperly remove a minor child of petitioner's from the jurisdiction or from the physical care of petitioner, repeatedly threatening to conceal a minor child from petitioner, or making a single such threat following an actual or attempted improper removal or concealment, unless respondent was fleeing an incident or pattern of domestic violence; or
    • Threatening physical force, confinement or restraint on one or more occasions.
      
      
• Intimidation of a dependent 
  • Subjecting a person who is dependent because of age, health or disability to participation in or the witnessing of…
    • …physical force against another or...
    • …physical confinement or restraint of another…
  • …which constitutes physical abuse as defined in this Act...
  • …regardless of whether the abused person is a family or household member.
  • Does not include reasonable direction of a minor child by a parent or person in loco parentis.
    
    
• Interference with personal liberty
  • Committing or threatening physical abuse, harassment, intimidation or willful deprivation...
    • ….so as to compel another...
      • ….to engage in conduct from which she or he has a right to abstain or 
      • ….to refrain from conduct in which she or he has a right to engage.
        
        
• Willful deprivation
  • Willfully denying a person who, because of age, health or disability requires
    • medication, 
    • medical care, 
    • shelter, 
    • accessible shelter or services, 
    • food, 
    • therapeutic device, or 
    • other physical assistance, 
  • ...and thereby exposing that person to the risk of physical, mental or emotional harm…
  • ...except with regard to medical care or treatment when the dependent person has expressed an intent to forgo such medical care or treatment.

750 ILCS 60/103(1 thru 15)