大 (Dà) — Great

Say "dah," falling hard. Fifty-one appearances across twenty-four chapters, which makes it one of the most common characters in the book and the one the Tao is finally named with.

Locked: 大 → "great." (Lowercase. Licensed flexions: large where the scale is physical or political, greater in comparatives, master of a craftsman.)

The character is a person standing with their arms out

說文解字 (Shuōwén Jiězì, c. 100 CE) defines it in eleven characters, and the last four are the whole entry:

天大，地大，人亦大。故大象人形。 "Sky is big, earth is big, humans are also big. Therefore 大 depicts a human form."

The graph is a figure seen head-on — arms spread, legs apart — and the oracle-bone form is the same figure with thicker strokes. Not a mountain, not an ocean, not a firmament. A person taking up as much room as a person can take up. It is bigness measured on a body, which is why it can mean a large state, a severe illness, and a senior craftsman without straining.

And the dictionary defines the character by quoting this book. 天大，地大，人亦大 is Chapter 25's own line. That it is cited with 人 (rén — human) rather than 王 (wáng — king), six centuries before our earliest surviving witness for 人, bears on a fork this edition has left open — notes/manuscript.md · Ch 25, and WORKLIST.md T4-8.

大 is a radical, and its family is made by marking the same body

凡大之屬皆从大 — "all of the 大 class follow 大." 說文 groups a set of characters that are one standing figure with one mark added, and where the mark goes is the whole meaning:

Above the head is the sky; below the feet is standing; through the hair is adulthood; at the sides are the armpits. The book's whole vocabulary of scale and position is built by putting marks on a person.

What this is not. 大 is not 人 (rén) with a stroke added, though it looks like it. 說文 makes both independent pictographs of the same subject: 人 is 象臂脛之形, "the form of arms and shins," seen in profile; 大 is 象人形, the human form seen head-on with the arms out. Siblings, not parent and child. 天 from 大 is a real derivation and 說文 states it; 大 from 人 is a resemblance.

And it bears directly on two locks. 天 is locked to sky (tian-天.md) precisely because 顛 is a body part — "a word for the crown of your head is not a word for an afterlife." The graph family says the same thing about 大: scale in this book is measured outward from a body, not downward from a heaven. That is the strongest single argument for keeping 大 ordinary, and it is why vast — a word with no body in it — was refused.

The honest limit. 說文 is c. 100 CE, centuries after the oracle-bone forms, and it rationalises elsewhere in ways this glossary flags — 士's 一 + 十 and the Han cosmology on 王. But 天 as 大 with a head-mark, 亦 as armpits and 夫 as a hairpin are standard paleography rather than 說文's speculation. Whether Laozi or his readers saw any of it is unknowable; that the characters are built this way is not.

Four jobs, one word

English great reaches all four — great size, the great square, great trouble, a great carpenter — because it is, like 大, the general-purpose word rather than a specialist one. That coverage is the whole case for it, and it is why the flexions above are narrow: they mark the two places where ordinary English will not say great at all (a large state; no greater disaster).

The counter-term is 小, and Chapter 34 puts both on the Tao

小 (xiǎo — small) shadows 大 through the book: 大小多少 (dà xiǎo duō shǎo — "great or small, many or few," 63), 治大國若烹小鮮 ("governing a large state is like cooking a small fish," 60), the large and small states of 61, and 小國寡民 ("a small state, few people," 80).

Chapter 34 gives the Tao both names in three lines — 常無欲，可名於小 ("ever desireless, it can be called small") and 萬物歸焉而不為主，可名為大 ("the countless things return to it, and without acting as their master, it can be called great"). Both fit. Neither holds. That is the same joke Chapter 25 tells at length, and it is why 大 is a name in this book rather than a description.

Chapter 25 — the word is chosen because it fails

強為之名曰大 (qiǎng wèi zhī míng yuē dà — "forcing a name on it, I call it great") is the only place the book names the Tao outright, and 王弼 (Wáng Bì, d. 249 CE) explains that the naming is a defeat:

吾所以字之曰道者，取其可言之稱最大也。責其字定之所由，則繫於大。大有繫則必有分，有分則失其極矣。 "The reason I 字 it 'Tao' is that I take the greatest of speakable designations. But press for what fixes that designation and it ties to 大 — and 大, once tied, must have divisions; having divisions, it loses its utmost."

Naming it 大 costs it its utmost. The chapter has just spent three lines saying no name can hold a thing without form, and then reaches for the most ordinary word available: big. The inadequacy is the argument.

What is set aside

"Vast." The strongest rival, and the one that reaches furthest into the chapter where 大 matters most — it has more force in English than great, which has been worn smooth by use, and it suits the Tao-naming and the cosmic members of the 41 and 45 frames. It fails on about two-thirds of the fifty-one lines, and it fails at the argument.

• No disaster vaster than discontent is unusable, and the comparative 禍莫大於 appears three times (46 ×2, 69).
• Vast trouble, vast hypocrisy, vast confusion — 大 in those lines means severe, not spatially immense (13, 18, 27).
• The vast carpenter (74), the vast person (38) — 大 there is seniority.
• Vast skill, vast argument — 大巧若拙 and 大辯若訥 need a superlative, not a size (45).
• 下士聞道，大笑之 — laughing aloud (41) is not a magnitude at all.

And the deeper objection: 大 is not an elevated word in Chinese. It is a person with their arms out. Rendering it with an English word that carries more charge than the original would make Chapter 25's forced name sound like it succeeded — which reverses the passage. A worn word is the faithful one here, and the wear is doing work. Vast is also, separately, spoken for: it currently renders 廣 (guǎng — broad) at ch 41 and 恢 (huī — vast) at ch 73, both of which sit alongside 大 or would want the word back.

"The Great," capitalized. A capital turns a forced, admittedly failing name into a title, which is the one thing the passage denies it. Standing rule 5.

"Mighty," "grand," "supreme," "cosmic." Each imports a register 大 does not have — power, ceremony, rank, or the firmament — where the character offers only a body's worth of room.

Left open

Whether large at 60–61 is a flexion or a fault. Six lines of 大國 read the large state, and the political sense genuinely resists great state, which in English means admirable. But the same six lines are the ones where 大 and 小 are a matched pair, and the pair reads better when both sit in one register.

Whether 大匠 is 大 at all. "Master carpenter" treats 大 as seniority, but 大匠 was also a Han office — Master of Works — and if the phrase is a fixed title then the character is not flexing, it is simply part of a name. The commentaries do not settle it.

Whether the 大▢若▢ frame wants the greatest. 大方無隅 reads "the great square has no corners"; 王弼 glosses the series as absolutes, not comparatives. The greatest square would say what he says, and would lose the frame's flatness. The frame is shared across chapters 41 and 45 and has to be decided as one thing, not line by line.