close vs slack

close

adj
  • Hot, humid, with no wind. 

  • Adhering strictly to a standard or original; exact. 

  • Marked, evident. 

  • Intimate; well-loved. 

  • Strictly confined; carefully guarded. 

  • Accurate; careful; precise; also, attentive; undeviating; strict. 

  • Almost, but not quite (getting to an answer or goal); near 

  • Oppressive; without motion or ventilation; causing a feeling of lassitude. 

  • At a little distance; near. 

  • Of a corporation or other business entity, closely held. 

  • Articulated with the tongue body relatively close to the hard palate. 

  • Narrow; confined. 

  • Short. 

  • Nearly equal; almost evenly balanced. 

verb
  • To move to a position allowing electricity to flow. 

  • To have a vector sum of 0; that is, to form a closed polygon. 

  • To move to a position preventing fluid from flowing. 

  • To cancel or reverse (a trading position). 

  • To make (e.g. a gap) smaller. 

  • To make a sale. 

  • To move so that an opening is closed. 

  • To grapple; to engage in close combat. 

  • To make the final outs, usually three, of a game. 

  • To terminate an application, window, file or database connection, etc. 

  • To come or gather around; to enclose; to encompass; to confine. 

  • To come to an end. 

  • To put an end to; to conclude; to complete; to finish; to consummate. 

  • To obstruct (an opening). 

  • To do the tasks (putting things away, locking doors, etc.) required to prepare a store or other establishment to shut down for the night. 

  • To turn off; to switch off. 

noun
  • The common staircase in a tenement. 

  • A cathedral close. 

  • The interest which one may have in a piece of ground, even though it is not enclosed 

  • The point at the end of a sales pitch when the consumer is asked to buy. 

  • The conclusion of a strain of music; cadence. 

  • A very narrow alley between two buildings, often overhung by one of the buildings above the ground floor. 

  • An end or conclusion. 

  • A grapple in wrestling. 

  • The manner of shutting; the union of parts; junction. 

  • The time when checkin staff will no longer accept passengers for a flight. 

  • A double bar marking the end. 

  • A street that ends in a dead end. 

slack

adj
  • Moderately warm. 

  • Vulgar; sexually explicit, especially in dancehall music. 

  • Not active or busy, successful, or violent. 

  • Excess; surplus to requirements. 

  • Lax; not tense; not firmly extended. 

  • Lacking diligence or care; not earnest or eager. 

  • Lax. 

  • Moderate in speed. 

  • Weak; not holding fast. 

verb
  • To slacken. 

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

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. 

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