"Timorous" is the formal English word, but in Scots poetry it appears in its most famous context alongside authentically Scots vocabulary in Burns's "To a Mouse": "wee, sleekit, cowrin, tim'rous beastie." Here its slightly formal quality among vernacular companions creates a gentle irony, and it comes to represent vulnerability and fearfulness in the face of overwhelming power. In Scottish poetry "timorous" is almost impossible to use without invoking Burns's mouse and all the sympathy and philosophical reflection that poem carries.

Timorous appears in Burns's "To a Mouse" as part of the famous opening address — "Wee, sleekit, cowrin, tim'rous beastie" — and it is worth noting that this is one of the few Latinate words in that line, sitting alongside the Scots "sleekit" and "cowrin." Burns's use of "timorous" rather than a pure Scots equivalent suggests the word belongs slightly to formal, literary register even as it is deployed in a vernacular poem. More broadly, "timorous" in Scottish cultural discourse has carried political charge, used to criticise those who shrink from political commitment or national self-assertion — a meaning still active in contemporary Scottish writing.