Digraphs as Improvised Disambiguators

mechanism

When an alphabet lacks a dedicated letter for a borrowed sound, spelling can become a warning system: digraphs or otherwise spare letters signal that the usual pronunciation rules no longer apply.

The h in a spelling like “ghazal” is not necessarily another sound to pronounce. It can be a tiny alarm: do not read the preceding letter in the ordinary way.

When spelling marks an exception

A borrowed phoneme creates a mapping problem: the receiving alphabet has familiar letters, but none cleanly identifies the incoming sound. Writers then combine available symbols into a disambiguator. The added letter matters less for its usual sound than for the distinction it creates—gh tells the reader that plain g is inadequate.

But these improvised signals compete for a limited supply of symbols. If kh already represents another sound, the same h-based trick cannot safely be reused. A spare q can then be recruited to keep two pronunciations apart. The apparent spelling irregularity is therefore evidence of Lossy Encoding Across Mismatched Alphabets being repaired locally.

Where it shows up

The warning h in ghazal

Adding h after g signals that the word contains a sound for which ordinary g is an insufficient guide.

Spare q as a substitute

Once kh was already occupied, q offered another visible distinction. Its job was to prevent two borrowed sounds from collapsing into the same spelling.

A signal still needs a convention

A digraph is not self-explanatory. It works only when readers have learned what distinction it marks, and the available combinations may already be committed to other sounds. Improvisation reduces ambiguity; it does not create a perfectly phonetic alphabet.

Read the odd letter diagnostically

When a loanword contains an apparently unnecessary h, q, or other unusual pairing, do not discard it as decorative spelling. Compare the marked form with the plain-letter alternative and identify which borrowed sound the extra symbol is preserving.

Episodes that teach this

Indian English is Weird & Britishers are to Blame - Schwa Deletion & Sound Pronunciations - FutureIQ · explained at 9:28 257,831 views
"they put in a little H there to indicate there is ghazal... q is different from c... KH was already taken so they couldn't use the H trick here, but there was an extra Q lying around which they used."