• to clear up, to decipher, to ease, to loose, to resolve, to settle, to solve, to sort out, to tackle, to unravel, to work out
• to button up, to do up, to fasten
• to dissolve, to fuse, to fuze, to thaw
• justification, motivation
• categorical, point-blank
• to reel off, to uncoil, to unfold, to unwind, unwound