Search Result for "write-only language":

The Free On-line Dictionary of Computing (19 January 2023):

write-only language A language with syntax (or semantics) sufficiently dense and bizarre that any routine of significant size is automatically write-only code. A sobriquet applied occasionally to C and often to APL, though INTERCAL and TECO certainly deserve it more.
The Jargon File (version 4.4.7, 29 Dec 2003):

write-only language n. A language with syntax (or semantics) sufficiently dense and bizarre that any routine of significant size is automatically write-only code. A sobriquet applied occasionally to C and often to APL, though INTERCAL and TECO certainly deserve it more. See also Befunge.