The Spanish word 'hombrecillo' meaning 'little man' is formed from two parts: the noun 'hombre' (meaning 'man') and the diminutive suffix '-cillo'. The base word 'hombre' comes from the Latin word 'hominem' (accusative form of 'homo', meaning 'man'). The diminutive suffix '-cillo' is added to create the meaning of 'little man' or 'small man'.

This is a classic example of Spanish word formation where a diminutive suffix is added to a noun to indicate smallness or endearment. The transformation from Latin 'hominem' to Spanish 'hombre' shows typical sound changes that occurred as Latin evolved into Spanish, including the loss of the final '-m' and the development of 'n' into 'r'.

The most obvious related Spanish word is 'hombre' itself, which is much more common and fundamental in Spanish vocabulary. Students who know 'hombre' can easily understand 'hombrecillo' by recognizing it as simply 'hombre' with the diminutive suffix. Other related words include 'hombrón' (big man), which uses the augmentative suffix '-ón' instead of the diminutive '-cillo'.

Several English words share the same Latin root 'homo/hominem', including 'human', 'humane', and 'homicide'. While these words might look quite different from 'hombrecillo', they all trace back to the same Latin concept of 'man' or 'person'. The word 'homicide', for example, literally means 'the killing of a person', while 'human' directly refers to our species. The connection between these English words and 'hombrecillo' shows how Latin roots have influenced both English and Spanish vocabularies, though often in different ways.