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To begin your search, go to the alphabetical index below and click on the first letter of the word you are searching for.

in-, il-, im-, ir-

The prefix in- changes its form to il- before an l; to im- before b, m or p; and to ir- before r. This prefix (and its variations) have two meanings.

Meaning 1: not, without

  • Tom’s inability to whistle always frustrated him.
  • The argument was illogical.
  • What you are suggesting is impossible.
  • Leaving the door unlocked was irresponsible.

Meaning 2: in, into

  • The surgeon made an incision in the patient’s abdomen.
  • The ancient manuscript was richly illuminated in gold.
  • The family immigrated to Canada in 2004.
  • Irradiating food prolongs its shelf life.