D2O1U1B3T1F4U1L1
14 points
DOUBTFUL is validvalid
uncertain [adj] : DOUBTFULLY [adv], DOUBTFULNESS [n]
worthy of doubt [adj DOUBTFULLY] / something doubtful e.g. a starter in a race [n -S]
uncertain [adj] : DOUBTFULLY [adv], DOUBTFULNESS [n]
worthy of doubt [adj DOUBTFULLY] / something doubtful e.g. a starter in a race [n -S]