irrational impulse(n = noun.motive) - a strong spontaneous and irrational motivation; "his first impulse was to denounce them"; "the urge to find out got him into trouble"
is a kind of irrational motive
has particulars: compulsion, irresistible impulse
blind impulse, impulse, impulse explosive, impulse turbine, irrational, irrational hostility, irrational motive, irrational number, irresistible impulse, nerve impulse