active vs slack

active

adj
  • Not passive. 

  • Brisk; lively. 

  • Applied to a form of the verb; — opposed to passive. See active voice. 

  • Applied to verbs which assert that the subject acts upon or affects something else; transitive. 

  • (of a homosexual man) enjoying a role in anal sex in which he penetrates, rather than being penetrated by his partner. 

  • Requiring or implying action or exertion 

  • Given to action rather than contemplation; practical; operative 

  • Eligible to be processed by a compiler or interpreter. 

  • Having the power or quality of acting; causing change; communicating action or motion; acting;—opposed to passive, that receives. 

  • Emitting hot materials, such as lava, smoke, or steam, or producing tremors. 

  • Implying or producing rapid action. 

  • Given to action; constantly engaged in action; energetic; diligent; busy 

  • Quick in physical movement; of an agile and vigorous body; nimble. 

  • Applied to all verbs that express action as distinct from mere existence or state. 

  • In action; actually proceeding; working; in force 

noun
  • A person or thing that is acting or capable of acting. 

  • Any component that is not passive. See Passivity (engineering). 

slack

adj
  • Lax; not tense; not firmly extended. 

  • Moderately warm. 

  • Vulgar; sexually explicit, especially in dancehall music. 

  • Not active or busy, successful, or violent. 

  • Excess; surplus to requirements. 

  • Lacking diligence or care; not earnest or eager. 

  • Lax. 

  • Moderate in speed. 

  • Weak; not holding fast. 

adv
  • Slackly. 

noun
  • Unconditional listening attention given by client to patient. 

  • A temporary speed restriction where track maintenance or engineering work is being carried out at a particular place. 

  • A tidal marsh or shallow that periodically fills and drains. 

  • The part of anything that hangs loose, having no strain upon it. 

  • Small coal; coal dust. 

  • A valley, or small, shallow dell. 

verb
  • To slacken. 

  • To lose cohesion or solidity by a chemical combination with water; to slake. 

How often have the words active and slack occurred in a corpus of books? (source: Google Ngram Viewer )