"Kick heels" is an idiomatic expression that means to wait impatiently or waste time out of boredom. Synonyms for this phrase include "twiddling thumbs," "fidgeting," "dawdling," "lollygagging," "loafing," "lingering," "procrastinating," and "stalling." These words all convey the sense of restlessness and unwillingness to engage in meaningful activity that characterizes the behavior of someone who is "kicking their heels." Whether you're stuck in a waiting room or trying to avoid a task, using one of these synonyms will help you express your feelings of frustration and impatience in a more nuanced and interesting way.