Complex language slows people down and creates errors. Your checklist should be instantly understood.
Avoid jargon unless everyone who uses the checklist knows it. Don't assume expertise.
Instead of "Verify API endpoint returns 200 status code," write "Confirm the connection test shows 'Success.'"
Use concrete, everyday words. Replace "utilize" with "use." Replace "commence" with "start."
Short sentences work better than long ones. One idea per item.
Remember: people often use checklists under pressure or fatigue. Simple language reduces cognitive load and helps them focus on the actual task, not on decoding what you meant.
References
Scriven, M. (2000). The logic and methodology of checklists.