an arm and a leg (adjective) dear: very expensive
Sinonime: arguable, argumentative, contended, contentious, contestable, controvertible, debateable, disputable, disputatious, disputed, doubtable,
doubtful,
dubious, dubitable, in dispute, litigious,
moot, open to discussion, open to question, polemical,
questionable,
suspect,
uncertain, under discussion
Antonime: agreeable,
incontrovertible,
peaceful, uncontroversial, undisputed, undoubted, unquestionable