(n.) Want of aptitude.

abnormality anomaly futility impoliticalness impoliticness impropriety inability inadeptness inadequacy inadmissibility inadvisability inapplicability inappositeness inappropriateness inaptness inattentiveness incapability incapacity incompetence incompetency incongruity inconvenience inconveniency indexterity ineffectiveness ineffectuality inefficiency ineptitude ineptness inexpedience inexpediency infelicity inopportuneness irrelevance irrelevancy maladjustment maladroitness mediocrity mesalliance misalliance misjoinder misjoining mismatch pedestrianism rustiness skill-lessness thoughtlessness unaptness uncleverness uncongeniality undeftness undesirability undexterousness undextrousness unfitness unfittedness unfittingness unfortunateness unintelligence unmeetness unproficiency unprofitability unprofitableness unschooledness unseasonableness unseemliness unskillfulness unsuitability untimeliness untrainedness unwiseness uselessness worthlessness wrongness