/ ʌnˈkɒmən; NAmE -ˈkɑːm-/ adjective
1.
not existing in large numbers or in many places
SYN unusual , rare :
an uncommon occurrence
Side effects from the drug are uncommon.
It is not uncommon for college students to live at home.
Red squirrels are uncommon in England.
OPP common
2.
( formal or literary ) unusually large in degree or amount; great
SYN remarkable :
She showed uncommon pleasure at his arrival.