What's the term for becoming used to something so you don't even notice it anymore? [closed]

Solution 1:

Inured is a good choice, especially if the stimulus is a negative one.

http://www.thefreedictionary.com/inured

inured

tr.v. in·ured, in·ur·ing, in·ures also en·ured or en·ur·ing or en·ures To habituate to something undesirable, especially by prolonged subjection; >accustom: "Though the food became no more palatable, he soon became >sufficiently inured to it" (John Barth).

Solution 2:

You give three different situations that I feel require different expressions.
The gift can:

• blend into your surroundings.
• melt into the background.

You can become oblivious of/ to your surroundings.
You can also become accustom to something.

I worked in the room so often I became accustomed to the smell of cigarette smoke.

The gift sat on my desk for so long, it just blended into my surroundings.

I walked past the shop so often I became oblivious to its existence.

It is also possible to become numb to something however this seems to be used more when talking about sensations or experiences.

My boss yelled at me so much, I became numb to it after a while.

"it" refers to the experience of your boss yelling at you.

Note, though that "I didn't even notice it," implies that it is truly invisible to you, whereas "accustomed to" implies that you had to adapt to something so there was a conscious effort. So, my first example (depending on your intentions) might better be phrased "I worked in the room often, so I had to accustom myself to the smell of cigarette smoke." I mention this last example because Paul Ryan recently took over John Boehner's office, and will have to sterilize the room because he cannot take the smell. "I don't think I can accustom myself to the smell. I'm sure John was oblivious to it."

EDIT:
JEL suggested "acclimate." I feel this is an excellent addition. From my point of view, acclimate can also be applied to the situation described above about John Boehner's previous office. We also use the word acclimate for weather situations. I offer this word because I think it will help you better describe a situation in the future. Each of the words suggested have different uses. I don't think "acclimate" would fit the "gift on my desk situation." but it could fit another you have in mind.

Solution 3:

Consider, obliviate.

: to forget; to wipe from existence.

late 14c., "state or fact of forgetting," from Old French oblivion (13c.) and directly from Latin oblivionem (nominative oblivio) "forgetfulness; a being forgotten," from oblivisci (past participle oblitus) "forget," originally "even out, smooth over, efface," from ob "over" (see ob-) + root of levis "smooth," from PIE *lei-w-, from root *(s)lei- "slime, slimy, sticky" (see slime (n.)). Meaning "state of being forgotten" is early 15c. Wiktionary