no-brainer
nounEtymology From no + brain + -er.
1
Informal An easy or obvious conclusion, decision, solution; something requiring little or no thought.
- Choosing the older version which was as good as the newer version for half the cost was a no-brainer.
- "Babcock [an engineering services company with a facility at Rosyth] has new contracts for new frigates there, so opening up the opportunities for rail running in is a no-brainer."2019 November 20, Graeme Pickering, “Plans breathing new life into Fife”, in Rail, page 49:
2
Informal A conundrum requiring little or no thought to solve; A problem with an easy or obvious conclusion, decision, solution.
- This next exam question is a no-brainer.
- Related terms
- rocket science, brain surgery