The difference between the two dresses was indiscernible to anybody but her.
The synonym of imperceptible is unnoticed or invisible.
Some thing that is there but you cant see it or sense it.
Homogeneous. The parts from which cement is made from are indiscernible.
Tigers have black and orange stripes so when they are lurking in the grass, the black looks like grass. When they stalk their prey, the black is almost indiscernible.
i do not know how to use embalming in a sentence. (there is the sentence)
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
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