* Informal: "I had an inkling that she was going to be upset, but I didn't know why." (Meaning: a slight suspicion or feeling)
* Formal: "The detective's investigation yielded only an inkling of the truth, leaving many questions unanswered." (Meaning: a small amount of information)
* Figurative: "The artist's brushstrokes were so precise, they seemed to capture an inkling of the subject's soul." (Meaning: a hint or suggestion of something intangible)
Let me know if you'd like to see more examples!