Synonyms for great concern

Synonyms for great

good (high, fine, superior >>)
wonderful (awesome, beautiful, remarkable >>)
big (large, grand, heavy >>)
fantastic
superb (outstanding, famous, excellent >>)
immense (huge, tremendous, enormous >>)
splendid
long
substantial
lovely (cool, marvellous, marvelous >>)
considerable
greater
sizable

See all synonyms for great

Synonyms for concern

worry (bother, disturb, perturb >>)
relate (pertain, affect, involve >>)
interest (care, alarm, trouble >>)
fear (anxiety, apprehension, dismay >>)
deal (attributable, company, business concern >>)
unease (uneasiness, disquiet, disquietude >>)
respect

See all synonyms for concern