Last two. I think I've got the answers, but can't see why!
Having a sick mind, include name in gold, for example. 6 letters, m_n_a_.
It could be either mental or maniac, or perhaps something completely different!
Time to make water play around. 7 letters, T_i_d_e
Is it twiddle? w (water) in tiddle? Or t then widdle!!!