Synonyms of 'preview'
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If you describe an event as a foretaste of a future situation, you mean that it suggests to you what that future situation will be like.
It was a foretaste of things to come.
If you sample food or drink, you taste a small amount of it in order to find out if you like it.
We sampled a selection of different bottled waters.
Thesaurus for preview from the Collins English Thesaurus
A preview is an opportunity to see something such as a film, exhibition, or invention before it is open or available to the public.