Как по Английски будет wisselvallig

adjective

Not feeling, showing, or done with confidence and certainty.

Примеры использования:

I stand quietly under that glare, unsure of how to reply to such a statement

adverb

In a way that is not securely in position and is likely to fall or collapse.

Примеры использования:

The homes hung precariously over the edge of a huge crevice

adjective

Not securely held or in position; dangerously likely to fall or collapse.

Примеры использования:

A precarious ladder

adjective

Frequently changing; variable or irregular.

Примеры использования:

The exact dimensions aren't easily measured since they are inconstant