Funnel, pipeline & opportunity stages · Core
Loss reason
Also called: closed-lost reason
ELI5
A coded or qualitative explanation for why an opportunity was not won.
Used in conversation
“Do not move the opportunity until loss reason is confirmed.”
Pitch context
You will see “Loss reason” in go-to-market plans, sales forecasts, account reviews and commercial proposals when the discussion reaches funnel, pipeline & opportunity stages.
Why it matters: It helps a reader interpret funnel, pipeline & opportunity stages without confusing the measure, decision, role or evidence being discussed.
Sources & evidence · 2
Supporting source families. This entry is an editorial synthesis rather than a quotation from one canonical glossary.
- U.S. Small Business Administration — Write your business planSupporting source family · primary · checked 2026-08-16
- IFRS Foundation — IFRS GlossarySupporting source family · primary · checked 2026-08-16