Antonyms for giving an inkling include concealing, hiding, obfuscating, obscuring, and withholding. When someone conceals information, they actively work to keep it hidden or disguise it. Hiding is a similar process, but it is typically more physical, involving the placement of objects out of sight. Obfuscating and obscuring involve creating confusion or hiding the true meaning of something. Withholding is simply keeping something back and not sharing it with others. All of these opposites to giving an inkling can be used to intentionally keep important information secret, leaving others in the dark.