* **** : "To waver between multiple options". This can be a long process; one may for a month or longer if there is a big problem.
* **** : In modern usage, this usually means "to show reluctance to do something at once", "to begrudge". This can be an intentional process. may be willing to buy a present in his heart and just enjoying his kid's reaction.
* **** : "To hesitate" or "to temporarily waver". This roughly means you pause for a moment before doing something when you are 90% certain but not 100% certain. refers to a short process (typically a few seconds, occasionally one day or longer). If you don't know which option is better at all, that's not but . For example, you can say , but not .
* **** : A Sino-Japanese (kango) version of (see wago-and-kango). It's a stilted word and is almost never used in informal conversations.
Some have other usages I haven't mentioned (e.g., means "to lose one's way on the street"), so please check your dictionary.