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in·ert

inert

 
pronunciation:
ih nuhrt
features:
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part of speech: adjective
definition: not being able to move, act, or resist.
She took sleeping pills and is lying inert on the couch.
synonyms:
motionless, stationary
antonyms:
animated
similar words:
fixed, passive, still
derivations: inertly (adv.), inertness (n.)
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The word inert contains the following part:
in-2 Latin prefix that means not, without
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The prefix in-2 occurs in Latin loanwords and attaches to Latinate bases. The bases of most words prefixed with in-2 are independent adjectives (inadvertent, incognizant), although the base adjective may no longer be in widespread use (as with incessant ). Exceptions include iniquitous and indignant . -in2 has multiple forms, as the 'n' sound in in-2 assimilates to the initial sound of the base to which it is attached. See the assimilated forms ig-, il-2, im-2, and ir-2.