Imperceptible

The scent of the flower was so imperceptible that he had to get very close to smell it.

The speaker's accent was so imperceptible that I couldn't tell where she was from.

The increase in speed was imperceptible to the passengers.

The change in policy was based on an imperceptible shift in public opinion.

The slight flicker in the candle flame was imperceptible except to those watching closely.

The architecture of the building was so subtle that its beauty was imperceptible at first glance.

The difference in weight between the two objects was so imperceptible that they couldn't tell them apart.

The ultrasonic sound was imperceptible to the human ear.

The cause of the problem was imperceptible to him until he ran a diagnostic test.

The changes to the recipe were so imperceptible that the dish tasted the same as before.

The chemical reactions taking place were so imperceptible that they went unnoticed.

The change in his demeanor was so imperceptible that no one noticed it.

The difference in sound quality was so imperceptible that it didn't matter which headphones they used.

The difference between the two fabrics was imperceptible to the naked eye.

The changes in the painting were so subtle that they were imperceptible to most people.

The change in her hairstyle was so imperceptible that most people didn't notice.

The expression on her face changed in an imperceptible way, but he noticed.

The error in the code was imperceptible to the programmer, but caused major problems.

The change in the design of the logo was so imperceptible that nobody noticed.

The difference between the two cars was imperceptible until you got behind the wheel.

The subtle scent of the flowers was imperceptible until I got closer.

The changes in temperature were so imperceptible that they were not noticeable even with sensitive thermometers.

The imperceptible sound was enough to alert the animal to the danger.

The difference between the two shirts was imperceptible to the naked eye.

The hidden meaning in the movie was so imperceptible that most people missed it.

The sound was so imperceptible that only dogs could hear it.

The crack in the wall was so thin that it was almost imperceptible.

The amount of light in the room was so imperceptible that they had to turn on a lamp.

The change in humidity was so imperceptible that it didn't affect their comfort level.

The speed difference was so imperceptible that it didn't affect the race outcome.

The shift in mood was so imperceptible that nobody realized it until it was too late.

The change in the weather was imperceptible until the storm hit.

The company's financial troubles were caused by a series of small, imperceptible missteps.

The color difference between the two shades of paint was imperceptible.

The change in color was so imperceptible that no one noticed it.

The gas leak was imperceptible to the naked eye.

The fluctuation in temperature was so imperceptible that nobody noticed it.

The imperceptible change in her breathing indicated that she was lying.

The change in the recipe was imperceptible to the taste buds.

The car was traveling at an imperceptible speed.

The scientist discovered an imperceptible amount of bacteria in the water sample.

The amount of time they spent on the task was imperceptible.

The difference between the two sounds was so imperceptible that only a trained ear could distinguish them.

The temperature difference between the two rooms was imperceptible, but the humidity was noticeably higher.

The change in air pressure was so imperceptible that no one felt it.

The tiny scratches on the surface of the diamond were imperceptible to the naked eye.

The shift in the company's marketing strategy was imperceptible to the general public.

The differences in the sound frequencies are so imperceptible that only highly trained musicians can hear them.

The scratch on the car was so imperceptible that it went unnoticed.

The shift in tone in the conversation was so imperceptible that no one realized the change.