get down -
take the first step or steps in carrying out an action; "We began working at dawn"; "Who will start?"; "Get working as soon as the sun rises!"; "The first tourists began to arrive in Cambodia"; "He began early in the day"; "Let's get down to work now"
end,
terminate bring to an end or halt; "She ended their friendship when she found out that he had once been convicted of a crime"; "The attack on Poland terminated the relatively peaceful period after WW I"
recommence begin again; "we recommenced his reading after a short nap"
strike out set out on a course of action; "He struck out on his own"
fall pass suddenly and passively into a state of body or mind; "fall into a trap"; "She fell ill"; "They fell out of favor"; "Fall in love"; "fall asleep"; "fall prey to an imposter"; "fall into a strange way of thinking"; "she fell to pieces after she lost her work"
jump off set off quickly, usually with success; "The freshman jumped off to a good start in his math class"
get to arrive at the point of; "She gets to fretting if I stay away from home too long"
auspicate commence in a manner calculated to bring good luck; "They auspicated the trip with a bottle of champagne"
attack begin to injure; "The cancer cells are attacking his liver"; "Rust is attacking the metal"
break in make submissive, obedient, or useful; "The horse was tough to break"; "I broke in the new intern"
launch,
plunge smoothen the surface of; "launch plaster"
come on occur or become available; "water or electricity came on again after the earthquake"
embark,
enter set out on (an enterprise or subject of study); "she embarked upon a new career"