conditioned

American  

[kuhn-dish-uhnd] / kənˈdɪʃ ənd /

adjective

1. existing under or subject to conditions.

2. characterized by a predictable or consistent pattern of behavior or thought as a result of having been subjected to certain circumstances or conditions.

3. Psychology. proceeding from or dependent on a conditioning of the individual; learned; acquired.

   conditioned behavior patterns.

4. made suitable for a given purpose.

   Synonyms:

   adjusted

5. accustomed; inured.

   Synonyms:

   used to

6. air-conditioned.

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conditioned British  

/ kənˈdɪʃənd /

adjective

1. psychol of or denoting a response that has been learned Compare unconditioned

2. (foll by to) accustomed; inured; prepared by training

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Other Word Forms

• nonconditioned
  adjective
• self-conditioned
  adjective
• semiconditioned
  adjective
• well-conditioned
  adjective

Etymology

Origin of conditioned

late Middle English word dating back to 1400–50; see origin at condition, -ed ²

Explanation

If you're conditioned to expect something, it means you've learned over time or been taught to anticipate it. Many people become conditioned to eat something sweet after dinner. Most adults, through the habit of brushing their teeth every morning and night for their whole lives, become conditioned to brush regularly. In other words, they've been taught or trained to do it. Another way to be conditioned is to be in great physical shape: "I've never felt so conditioned as when I took that tap dancing class!" The adjective conditioned comes from the Old French condicion, "stipulation, state, or behavior."

Example Sentences

See Examples For:

conditioned

"We further found that conditioned medium from butyrate-treated IECs strongly induced IL-10-producing CD4+ T-cells in both mouse and human T-cell culture systems," Yu said.

From Science Daily ● Aug. 21, 2026

Like rats in a Skinner box being conditioned to get food or stop pain, AI models hill-climb in a process similar to reinforcement learning, tweaking their parameters based on feedback.

From The Wall Street Journal ● Aug. 14, 2026

If venues are air conditioned, are FIFA’s hydration breaks necessary?

From Los Angeles Times ● Aug. 10, 2026

Air conditioned museums are unsurprisingly top of the heat-escaping list.

From BBC ● Aug. 4, 2026

“When your entire allowance for the week is only three bucks, you learn to budget your time! That’s why I’m conditioned to hate being late!”

From "Auggie & Me" by R. J. Palacio