adjective. Not active or tending to be active.

adjective. undefined

adjective. Not functioning or operating; out of use.

adjective. Not being in continuous use or operation.

adjective. Retired from duty or service.

adjective. Not readily participating in chemical reactions; inert.

adjective. Marked by the absence or lessening of disease activity.

adjective. Showing no optical activity in polarized light.

In chem., causing no rotation in the plane of polarized light.

Not active or acting.

Marked by inaction or sluggishness; destitute of activity: as, an inactive existence; the inactive stage of insect life (that is, the period of metamorphosis, generally passed in concealment). Synonyms Inert, Lazy, etc. (see idle), passive, supine.

adjective. Not active; having no power to move; that does not or can not produce results; inert.

adjective. Not disposed to action or effort; not diligent or industrious; not busy; idle.

adjective. Not exhibiting any action or activity on polarized light; optically inactive; optically neutral; -- said of isomeric forms of certain substances, in distinction from other forms which are optically active.

adjective. Lacking biological or biochemical activity; not causing a specific biological or biochemical effect; -- said of substances such as enzymes which have lost their catalytic power, or of small molecules which are tested for some type of biological activity and found to lack that activity.

adjective. Not active, temporarily or permanently

adjective. Not functioning or operating; broken down

adjective. Retired from duty or service

adjective. Relatively inert

adjective. Showing no optical activity in polarized light

adjective. (chemistry) not participating in a chemical reaction; chemically inert

adjective. (military) not involved in military operations

adjective. lacking in energy or will

adjective. (pathology) not progressing or increasing; or progressing slowly

adjective. not exerting influence or change

adjective. not engaged in full-time work

adjective. not in physical motion

adjective. (of e.g. volcanos) not erupting and not extinct

adjective. lacking activity; lying idle or unused

adjective. not active physically or mentally

"I may be misunderstanding the term inactive, of course."

active  lively  

inactive molecules  optically inactive  

abeyant  dark  dead  dead-end  desk-bound  

inactivity  

inactively  

active  attractive  hyperactive  interactive  overactive  

apathetic  dormant  idle  impotent  indifferent  

abeyant  apathetic  asleep  at a standstill  cataleptic  

optically inactive