I'm not sure how to formulate this question, but some words bother me. Here's a sentence for you :
I often see these kinds of words and sometimes, like this one, I can't find what it could mean. My dictionary says "grumble, mutter" and so on, but isn't that what 呟く means? Then, how do you use these words? Can these type of words be translated or are they just part of the Japanese language without being able to translate them into English? I feel like they can't be translated at all.