noun
inkling
ING-kling/ˈɪŋklɪŋ/
A slight idea or suspicion about something.
The tentative sketch captures the designer's first inkling of a new chair.

Etymology
Its origin is disputed: it may reflect a verb meaning “utter in an undertone, hint,” or a term for a slight indication derived from marking a text for correction.
In context
Long ago, I had a vague inkling of a machine to travel through time, exclaimed the very young man.
More examples
- I have no inkling of what this repair will cost.
- His sudden silence gives me an inkling of trouble.
- We had our first inklings of their plan last week.
Forms
inkling · inklings