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Synonyms for challenge

Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

Synonyms for challenge

an act of taunting another to do something bold or rash


behavior or an act that is intentionally provocative

to call on another to do something requiring boldness


to confront boldly and courageously

to come near, as in quality or amount

to express opposition, often by argument

to take a stand against

The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Synonyms for challenge

a demanding or stimulating situation

questioning a statement and demanding an explanation

a formal objection to the selection of a particular person as a juror

Related Words

a demand by a sentry for a password or identification

Related Words

take exception to

ask for identification

raise a formal objection in a court of law

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
During the additional year of follow-up, 22 of the 203 patients in whom asthma had been ruled out had a positive bronchial challenge test result at 6 or 12 months.
Heyder, "Impulse oscillometry in healthy nonsmokers and asymptomatic smokers: effects of bronchial challenge with methacholine," Journal of Aerosol Medicine, vol.
Investigation of cough Clinical investigations Indication Chest X-ray (CXR) All chronic cough or if suspect pneumonia/cancer Sputum M, C and S or acid-fast If purulent sputum produced bacilli staining and TB culture Pulmonary function tests (pre-and If suspect asthma or chronic post-bronchodilator spirometry, obstructive pulmonary disease serial peak flows) (COPD) Bronchial challenge tests If suspect asthma (metacholine, exercise) Gastrointestinal tests If suspect GORD (24-h oesophageal pH) Bronchoscopy If suspect cancer, foreign body or sputum -ve TB High-resolution computed If suspect bronchiectasis or ILD tomography (HRCT) Electrocardiogram (ECG) and If suspect cardiac disease echocardiography
Forced expiratory volume in 1 sec (FE[V.sub.1]) and PEF were measured with a portable combined spirometer every 15 min during the exposure to formaldehyde or air-only in the chamber and every hour until the methacholine provocation test, which was performed 8 hr after the end of the allergen bronchial challenge.
Chief among these is bronchial challenge testing, a topic covered well and in sufficient detail to guide a lab in establishing this additional testing protocol if they are not already doing it.
Exclusion criteria for methacholine challenge were history of ischaemic heart disease and use of medications influencing the outcome of bronchial challenge (oral steroids, anticholinergic drugs and oral or topical [Beta]-blockers).
Delayed asthmatic response to bronchial challenge with allergen-mediators, eicosanoids, eosinophil and neutrophil constituents in the blood and urine (abstract).