THESAURUS
abdicate
abandon, abjure, acknowledge defeat, be pensioned, be superannuated, cashier, cast, cease, cede, cry quits, demit, desist from, drop, forgo, forswear, give over, give up, hand over, have done with, jettison, lay down, leave, leave off, pension off, quit, reject, relinquish, renounce, renounce the throne, resign, retire, retire from office, scrap, shed, slough, stand aside, stand down, step aside, superannuate, surrender, throw away, throw out, throw up, vacate, waive, withdraw from, wrest, yield
ROGET THESAURUS
abdicate
Laxity
VB
be lax, laisser faire, laisser aller, hold a loose rein, give the reins to, give rope enough, give a loose to, tolerate, relax, misrule, go beyond the length of one's tether, have one's swing, have one's fling, act without instructions, act without authority, act outside of one's authority, act on one's own responsibility, usurp authority, dethrone, depose,
abdicate.
Resignation
VB
resign, give up, throw up, lay down, throw up the cards, wash one's hands of, abjure, renounce, forego, disclaim, retract, deny, abrogate, desert, get rid of,
abdicate, vacate, vacate one's seat, accept the stewardship of the Chiltern Hundreds, retire, tender one's resignation.