Lizzie is Dr. Murray’s maidservant and Esme’s steadfast friend. Despite her own limited agency due to her social class, Lizzie is a constant support to Esme. She is characterized as a maternal figure who provides care and wisdom, serving as Esme's ally throughout the novel.

Harry, Esme's father, is a kind and supportive presence in her life. He encourages Esme's curiosity about words and language. Despite his love and support, Harry inadvertently exemplifies the misogyny of the time, failing to advocate for Esme’s professional abilities in the male-dominated world of lexicography.

Gareth, Esme’s eventual husband, works as a compositor at Oxford University Press. Initially underestimated by Esme, he ultimately proves his skill and becomes a supportive partner. Gareth's belief in Esme's capabilities provides a contrast to the other men in her life and reshapes her views on love and marriage.

Tilda is an actress and suffrage activist who influences Esme with her modern views on women's rights. She contrasts with Lizzie by advocating for freedom and exploration. Though Esme sometimes questions Tilda's methods, their shared commitment to women's visibility forges a lasting friendship.