English Words Starting With I

• inefficiency

  nounC1
  /ˌɪn.ɪˈfɪʃ.ən.si/The state or quality of not achieving maximum productivity; the wasteful use of resources like time or energy to produce a result.
• inelastic collision

  nounLow (Highly technical term)
  /ˌɪn.ɪˈlæs.tɪk kəˈlɪʒ.ən/A type of collision between bodies where the total kinetic energy is not conserved, with some energy being converted into other forms such as heat, sound, or deformation.
• inelastic scattering

  nounC2
  /ˌɪnɪˈlæstɪk ˈskætərɪŋ/A physical process where a particle or photon collides with a target and loses energy, causing the target's internal state to change.
• inelegance

  nounC1
  /ɪnˈɛlɪɡəns/The quality of lacking grace, refinement, or sophistication in appearance, manner, or design.
• inelegancy

  nounVery Rare
  /ɪnˈɛl.ɪ.ɡən.si/The state or quality of being inelegant; lack of grace, refinement, or good taste.
• ineligible

  adjectivenounC1/C2
  /ɪnˈɛlɪdʒəbl̩/Legally or officially disqualified from a privilege, office, or activity.
• ineptitude

  nounC1
  /ɪˈnɛp.tɪ.tʃuːd/A lack of skill, ability, or competence; clumsiness or unsuitability for a given task.
• ineptness

  nounC1
  /ɪˈnɛptnəs/The quality or state of being incompetent, unsuitable, or foolish; a lack of skill, judgment, or fitness.
• inequality

  nounB2
  /ˌɪnɪˈkwɒlɪti/The state of not being equal, especially in status, rights, opportunities, or treatment.
• inequity

  nounC2
  /ɪˈnekwɪti/A state of injustice or unfairness, especially arising from unequal distribution of rights, opportunities, or resources.
• inerrancy

  nounC2
  /ɪnˈɛrənsi/The state or quality of being completely free from error or mistake.
• inerrantism

  nounVery low frequency
  /ɪnˈɛr.ən.tɪ.zəm/The theological doctrine that a particular text (especially the Bible) is completely without error or fault.
• inert gas

  nounMedium-Low
  /ɪˌnɜːt ˈɡæs/any of a group of gaseous elements (such as helium or argon) that are chemically very unreactive.
• inertance

  nounVery Low
  /ɪˈnɜː.təns/A physical property describing resistance to change in flow, especially the opposition to a change in acoustic or fluid flow rate due to inertia; the acoustic or fluidic analogue of mass.
• inertia

  nounC1
  /ɪˈnɜːʃə/A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. In general use, resistance to change or movement.
• inertia force

  nounC2
  /ɪˈnɜː.ʃə fɔːs/A fictitious force that appears to act on a body when observed from a non-inertial (accelerating) frame of reference.
• inertia selling

  nounLow
  /ɪˈnɜːʃə ˈsɛlɪŋ/The unethical business practice of sending unsolicited goods to a person and then demanding payment for them, relying on the recipient's inaction or inertia to secure a sale.
• inertia-reel seat belt

  nounLow
  /ɪˈnɜː.ʃə riːl ˈsiːt ˌbelt/A vehicle safety device comprising a belt that automatically adjusts its length via a spring-loaded mechanism that locks during sudden deceleration.
• inertial force

  nounC1
  /ɪˌnɜː.ʃəl ˈfɔːs/A force that appears to act on a body due to its inertia when observed from a non-inertial (accelerating) frame of reference.
• inertial fusion

  nounVery Low (C2/Technical)
  /ɪˌnɜː.ʃəl ˈfjuː.ʒən/A method of achieving nuclear fusion where fuel is compressed and heated to fusion conditions by its own inertia following rapid energy deposition.

Showing 1501–1520 of 3621 words.