certain
形容词比较级：more certain
形容词最高级：most certain
同义词：
sure | particular | some | special | positive | definite | decided | decisive | insistent | conclusive | confirmed | destined | demonstrable | unavoidable | inevitable | unquestionable | factual | real | true | fated | especial | confident | convinced | evident | dependable | specific | individual | a number of | a few | several | selected | a variety of | sealed |
反义词：
词义辨析：
同义:
a.确凿的; 确信的
sure
positive
definite
a.某; 某种程度的
some
special
particular
同义参见:
insistent
inevitable
real
conclusive
unavoidable
true
confirmed
confident
factual
fated
unquestionable
especial
destined
demonstrable
decisive
decided
反义:
a.无疑的; 可靠的
uncertain
doubtful