6.1.1710
IMMEDIATE
 
CORE
 
( -- )

Make the most recent definition an immediate word. An ambiguous condition exists if the most recent definition does not have a name or if it was defined as a SYNONYM.

See:
15.6.2.2264 SYNONYM A.6.1.1710 IMMEDIATE.

Rationale:
Typical use: : X ... ; IMMEDIATE
Testing:
T{ 123 CONSTANT iw1 IMMEDIATE iw1 -> 123 }T
T{ : iw2 iw1 LITERAL ; iw2 -> 123 }T

T{ VARIABLE iw3 IMMEDIATE 234 iw3 ! iw3 @ -> 234 }T
T{ : iw4 iw3 [ @ ] LITERAL ; iw4 -> 234 }T

T{ :NONAME [ 345 ] iw3 [ ! ] ; DROP iw3 @ -> 345 }T
T{ CREATE iw5 456 , IMMEDIATE -> }T
T{ :NONAME iw5 [ @ iw3 ! ] ; DROP iw3 @ -> 456 }T

T{ : iw6 CREATE , IMMEDIATE DOES> @ 1+ ; -> }T
T{ 111 iw6 iw7 iw7 -> 112 }T
T{ : iw8 iw7 LITERAL 1+ ; iw8 -> 113 }T

T{ : iw9 CREATE , DOES> @ 2 + IMMEDIATE ; -> }T
: find-iw BL WORD FIND NIP ;
T{ 222 iw9 iw10 find-iw iw10 -> -1 }T    \ iw10 is not immediate
T{ iw10 find-iw iw10 -> 224 1 }T          \ iw10 becomes immediate

See F.6.1.2510 ['], F.6.1.2033 POSTPONE, F.6.1.2250 STATE, F.6.1.2165 S".