is a , open or closed. Every tile in the hand is an honor: winds and dragons, and no number tiles at all.
The name players use is tsuuiisou (字一色). This site's glossary also lists it as All Honors. The EMA 2016 rules call it all honours.
Winds and dragons only
There are seven honors. The winds are East 
, South 
, West 
, and North 
. The dragons are white 
, green 
, and red 
.
Honors don't make runs, so the hand is four triplets or quads and a pair. That shape is toitoi too, but toitoi's 2 don't add to a yakuman.
The glossary entry is the short form: a hand of only.
Two calls, still a yakuman
You called on East and on : and . These seven tiles are still in your hand.
The hand waits on or , a wait on two pairs. Either tile finishes all honors. A collects 32,000. The dealer collects 48,000. Fu don't count once a hand reaches the limit.
Neither tile adds a second yakuman. The makes a second dragon triplet, one short of daisangen. The winds stop short of little four winds, which needs three wind triplets and a wind pair.
Two yakuman, then three
No calls. Triplets of all three dragons, and pairs of East and South. The hand waits on or .
Win by ron and the hand is and all honors. Tenhou and Mahjong Soul stack yakuman, so that's a double. A non-dealer ron collects 64,000. The dealer collects 96,000.
Draw the tile yourself and the fourth triplet stays concealed too. That adds suuankou: three yakuman. A non-dealer tsumo collects 24,000 from each other non-dealer and 48,000 from the dealer, 96,000 in all.
Under the EMA 2016 rules, yakuman aren't cumulative. Both wins pay one yakuman there: 32,000 to a non-dealer.
Seven pairs of honors
Six honor pairs and a lone red dragon. The hand waits on alone. The win is with every honor in it once, and Tenhou's rules accept all honors in seven-pairs form. A non-dealer ron collects 32,000. The dealer collects 48,000.
It's the only seven-pairs shape the yakuman has. There are exactly seven kinds of honor, and seven pairs needs seven different pairs. The EMA 2016 entry says only that the hand is made entirely of honour tiles. If your table plays other rules, read its rule card before you count this one.
Open or closed
Mahjong Soul's in-game yaku list marks , , and as closed only, and leaves all honors unmarked. The EMA 2016 entry has no concealed condition either. That's the row on this site: yakuman, open or closed.
What sits with it
Ordinary yaku and add nothing to a yakuman. Other yakuman do on Tenhou and Mahjong Soul, and honors make room for several. Daisangen fits when three of the sets are dragons. Little four winds and big four winds fit when the winds take the sets. Suuankou fits on a of four concealed triplets. The scoring guide covers how each rule set treats two yakuman in one hand.
Common mistakes
- Adding or on . A yakuman pays the limit, whatever else the hand holds.
- Missing a second yakuman. Three dragon triplets in an all-honors hand are daisangen as well, and Tenhou and Mahjong Soul pay both.
- Counting one number tile. A pair of 1s or 9s turns the hand into honroutou.
- Assuming seven pairs counts everywhere. Tenhou says it does. Check the rules where you play.
Price an all-honors hand
The score calculator pays one yakuman at 32,000 or 48,000 on a ron. Set two or three yakuman for the stacked hands: 64,000 or 96,000 for a non-dealer.
Open the score calculator