1) Swallow (6) _ D _ M _ _
2) Lowest member of the British nobility (6) _ _ R _ _ S (I think its BARONS)
3) Thrive on others (6) _ A _ T _ N
4) You won't get any sense out of him (9) _ _ C K H E A D (THICKHEAD)
5) Negligent; untidy (8) S _ I P S H O D (it should be SLIPSHOD & not SHIPSHOD BUT THE 'H' in Thickhead does not fit in Slipshod)