I study French, German and Mandarin, all oft them at different levels. It is for this reason that I need to practice it more as I find it easier to retain languages with little effort if I speak it more often.
I have studied both French and Mandarin for the past two years, but with limited exposure the past year I have gotten somewhat out of practice, as can happen. My German is still at beginners level, but I hope to change that soon.
I have also studies some Dutch and will be starting with Swedish and Russian in the coming months.