'irregularly-directed' originates from the combination of 'irregularly' and 'directed'. 'Irregularly' comes from Latin 'irregularis', where 'ir-' meant 'not' and 'regularis' meant 'rule'. 'Directed' comes from Latin 'directus', where 'di-' meant 'apart' and 'rectus' meant 'straight'.

'Irregularly' changed from the Latin word 'irregularis' and 'directed' from 'directus', eventually forming the modern English compound adjective 'irregularly-directed'.

Initially, 'irregularly' meant 'not according to rule', and 'directed' meant 'guided or managed'. Together, they evolved to describe something not following a consistent path.