i Register
In some senses, abdominal is marked as obsolete, colloquial. Watch for register when choosing this word.
ADJ.
autoimmune, good, phenomenal, post-operative, severe, terrible, upper
VERB + ABDOMINAL
am, cause, causes, disorder, doing, effects, exercised, exercises
ABDOMINAL + NOUN
cavity, constipation, crunches, endoscopy, malnutrition, muscles, pain, region
PREP.
from, in
ADV.
recently, simply, such