What is another word for on left?
Pronunciation: [ˌɒn lˈɛft] (IPA) 
The phrase "on left" refers to something being located to the left of a person or object. There are many synonyms for this phrase including "to the left," "at the left," "left-hand side," "adjacent left," "portside," and "sinister." Each of these synonyms can be used in different contexts, depending on the situation. For example, "portside" is often used when referring to boats or ships, while "sinister" has a negative connotation and is often used in literature or movies to refer to something evil or foreboding. Regardless of the synonym chosen, each one accurately describes a location to the left of the speaker.
