Cluster

Cluster #21 answers

Friday 26 June 2026 · daily word connections puzzle

Spoilers below: all four groups and their words. Want to try it first? This puzzle is still free to play in the archive.

Play this puzzle Play today's Cluster

All four groups for Cluster #21

TREE DEFENSESTHORN, SPINE, PRICKLE, BARK

Yellow - the most straightforward groupTHORN, SPINE, PRICKLE and BARK are all tree defenses - the most direct link on the board.

SCALE INSECTSMEALYBUG, WHITEFLY, SCALE, PSYLLID

Green - mediumMEALYBUG, WHITEFLY, SCALE and PSYLLID are all scale insects.

BREATHING HOLES (BIOLOGY)SPIRACLE, BLOWHOLE, NOSTRIL, STOMA

Blue - harderSPIRACLE, BLOWHOLE, NOSTRIL and STOMA are all breathing holes.

___ BUTTERFLYRED, DEATH, SWALLOWTAIL, MONARCH

Purple - the trickiest groupEach word goes in front of BUTTERFLY to make a word or phrase: RED + BUTTERFLY, DEATH + BUTTERFLY, SWALLOWTAIL + BUTTERFLY and MONARCH + BUTTERFLY.

About Cluster #21

Cluster gives you 16 words that hide four groups of four. Yellow is the most straightforward group and purple the trickiest, with green and blue in between. You can make four mistakes. New to it? Read how to play Cluster.