English Dictionary

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inertia (ɪnˈɜːʃə ; -ʃɪə) 



  1. the state of being inert; disinclination to move or act
  2. (physics)
    1. the tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force
    2. an analogous property of other physical quantities that resist change   ⇒  ■ thermal inertia

Derived Forms

inˈertial  adjective


View thesaurus entry
= inactivity, apathy, lethargy, passivity, stillness, laziness, sloth, idleness, stupor, drowsiness, dullness, immobility, torpor, sluggishness, indolence, lassitude, languor, listlessness, deadness, unresponsiveness, disinclination to move

Translations for 'inertia'

  • British English: inertia If you have a feeling of inertia, you feel very lazy and unwilling to move or be active. NOUNHe resented her inertia, her lack of energy and self-direction.
  • Brazilian Portuguese: inércia
  • Chinese: 懒惰懒懶惰
  • European Spanish: pereza
  • French: inertie
  • German: Trägheit
  • Italian: inerzia
  • Japanese: ものぐさ
  • Korean: 무력감
  • Portuguese: inércia
  • Spanish: inercia

Example Sentences Including 'inertia'

He struggled against gravity and inertia , his scalp prickling with sweat from the exertion, then was able to roll onto his other side.
Terman, Douglas Cormorant
`Sir, you said Mr Hanford's been into a policy of calculated inertia.
Parkes, Roger Riot
I wallow in my pit of miserable inertia , unable to help myself.
Alex George LOVE YOU MADLY (2002)


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