The term 'START, AS A HOBBY' can be summed up by the crossword solution 'TAKEUP', which is a 6 letter word. This term refers to the act of beginning something as a hobby or pastime. It could refer to taking up a new activity, such as painting or playing an instrument, or it could refer to dedicating more time to an existing hobby. In either case, it implies that the person is engaging in the activity for enjoyment and not necessarily for any other purpose.