Letters that make slack up
s, a, k, l, p, c, u are letters that make 'slack up'
Words within slack up
la, SL, AC, lack, slack, up, LA, Ac, La, lac are words within 'slack up'
s, a, k, l, p, c, u are letters that make 'slack up'
la, SL, AC, lack, slack, up, LA, Ac, La, lac are words within 'slack up'
1 possible definitions for 'slack up'
Under this definition, slack up is a verb and has the following properties:
loosening, slackening, drop-off, relaxation, slack, slump, falloff, falling off are derivatives of 'slack up'.