keyword

hardest crossword puzzles online

Monthly search volume and cost-per-click data for "hardest crossword puzzles online" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=hardest+crossword+puzzles+online&country=us" +--------------+------------------+ | volume | 90 | | cpc | $1.64 | | competition | 0.02 | | country | US | | updated | 2026-06-12 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
crossword for free	201,000	$1.47	18/20
free crossword puzzles	201,000	$1.47	18/20
free crosswords	49,500	$1.28	18/20
free online crossword puzzles	49,500	$0.62	18/20
free crossword puzzles online	18,100	$0.91	19/20
crossword online	9,900	$0.89	20/20
crosswords online	9,900	$1.14	20/20
hard crossword puzzles	6,600	$1.92	20/20
free crosswords online	3,600	$1.84	19/20
hard crossword	2,400	$0.11	20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=hardest+crossword+puzzles+online&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt