adj. 25B6; adjective
an uncommon plant : UNUSUAL, abnormal, rare, atypical, unconventional, unfamiliar, strange, odd, curious, extraordinary, outlandish, novel, singular, peculiar, queer, bizarre; alien; informal weird, oddball, offbeat.
abductions are uncommon : RARE, scarce, few and far between, exceptional, abnormal, isolated, infrequent, irregular; Brit. out of the common.
an uncommon capacity for hard work : REMARKABLE, extraordinary, exceptional, singular, particular, marked, outstanding, noteworthy, significant, especial, special, signal, superior, unique, unparalleled, prodigious; informal mind-boggling.