What's the difference between invaluable and valueless?

Invaluable


Definition:

  • (a.) Valuable beyond estimation; inestimable; priceless; precious.

Example Sentences:

  • (1) It facilitated the acquisition of quantitative velocity information with standard Doppler ultrasound techniques by identifying areas of high velocity or turbulent flow and was invaluable in the assessment of anomalous pulmonary venous drainage occurring either as an isolated anomaly or in conjunction with complex intracardiac lesions.
  • (2) A 1-month stay in Bangladesh at the Dhaka Shishu Hospital, made possible by the Canadian Association of Paediatric Surgeons, afforded an invaluable opportunity to be involved in Pediatric Surgery in such a setting.
  • (3) With United having failed to claim an invaluable away goal they have to win by a margin of three in the return leg at Old Trafford on 19 March.
  • (4) Treasury secretary Tim Geithner called her an "exceptional talent" whose broad experience would "provide invaluable leadership for this indispensable institution at a critical time for the global economy".
  • (5) However, the use of systemic treatment with psychoactive drugs used widely in clinical practice, in carefully controlled, behavioural and and endocrine experiments, is likely to provide invaluable information on where and how to investigate the neural mechanisms involved.
  • (6) The clinical diagnosis is sometimes difficult and only the computerized axial tomography may be of invaluable help.
  • (7) The nucleotide sequences presented thus enable us to discriminate the tyrosinase gene from its related sequences and are invaluable for a gene diagnosis of oculocutaneous albinism.
  • (8) The DNA homology data indicate that phenotypic information alone, including antigenic serotypic data, is not always adequate for species designation among the ureaplasmas and that comparative analyses of the genome provide invaluable data for establishing new species.
  • (9) The tracer techniques thus provide invaluable information about platelet-fibrin deposition, its organization and dissolution, and for development of less thrombogenic surfaces for use in cardiovascular prostheses.
  • (10) Surgical evaluations, including examinations under anesthesia, staging laparotomy and second look laparotomy were also invaluable in assessing disease status.
  • (11) In addition, the ELISA was equally capable of identifying elevated serum EH in patients with HCC, and should prove invaluable in evaluating the effectiveness of serum EH levels as a marker for HCC.
  • (12) Tottenham must finance their new £400m stadium, into which they intend to move in 2018-19, and so Pochettino’s ability to succeed without heavy backing on the market is invaluable.
  • (13) The US military source described Mohammed Basardah as an "invaluable" source who had shown "exceptional co-operation", but lawyers for other inmates claim his evidence is unreliable.
  • (14) Thus, we concluded that CT is not only a highly sensitive and accurate modality, but also an invaluable radiological diagnostic tool in the evaluation of blunt abdominal injury.
  • (15) This article reviews the conception and development of this invaluable contribution to our understanding of health and disease.
  • (16) The US military describe him as an "invaluable" source who has shown "exceptional co-operation" and shared his "vast knowledge" with the camp authorities.
  • (17) The intensity and duration of the interventions, the extensive outreach efforts to the family and the dedication and commitment of the staff are not easily replicated but invaluable in helping providers and researchers understand to what extent the impact of severe deprivations and risk can be mediated and potential damage to the newborn prevented.
  • (18) The autopsy of victims in such circumstances, if properly conducted, can yield invaluable trace evidence leading to the identification of the explosive device.
  • (19) In our experience CA-125 is an invaluable indicator of the clinical status of the patient and could be a new tumor marker in patients with MGCT.
  • (20) This Fogarty International Conference has been invaluable because of the diverse backgrounds of the distinguished participants which it attracted.

Valueless


Definition:

  • (a.) Being of no value; having no worth.

Example Sentences:

  • (1) The alleged contrast between the descriptive clinical (and according to a German author like Jaspers literary and superficial) French psychiatry and the scientific theoretical (and for the most aggressive French authors valueless) German one was a recurrent theme.
  • (2) Antibiotics are valueless in decreasing the incidence of local septic complications, such as empyema or pericholecystic abscess formation.
  • (3) Guy Foster, head of research at Brewin Dolphin, says gold is a curious asset: “It is supposed to be a store of value, but by conventional investment metrics it is almost valueless.” You can invest in exchange traded funds such as the SPDR Gold Trust, which tracks the spot price of gold; a gold miner such as Randgold Resources; or buy bullion or coins.
  • (4) The semantic differential scheme consisted (apart from six distractor pairs) of the following semantic pairs: (a) negative-positive, (b) valueless-valuable, (c) bad-good, (d) onesided-manysided, (e) unimportant-important, and (f) stupid-smart.
  • (5) Pretreatment with heparin was virtually valueless, while methylprednisolone offered temporary protection.
  • (6) It is therefore suggested that bacteriostatic agents may be valueless for prophylaxis of bacterial endocarditis.
  • (7) Most indigenous trees in Africa coppice when cut, their stumps looking like tangled weeds and valueless scrub to the unknowing eye.
  • (8) The test is thus valueless for carrier detection, and reasons are given why it should be so.
  • (9) All of this would have been valueless if the series had been clumsy, but it wasn't.
  • (10) Forests have historically been seen as valueless, and forestry as backwards – neither of them worthy of inclusion in 'development' strategies, or of the usual set of policy instruments encouraging proper investment, such as tax incentives and appropriate credit.
  • (11) Weight-bearing activity has been commonly considered to be essential for the beneficial effects of exercise on the skeleton, and, therefore, swimming has been considered valueless in the maintenance of bone mass.
  • (12) If – eventually – the companies cannot, for the sake of the human race, be allowed to extract a great many of the assets they own, then many of those assets will in time become valueless.
  • (13) The positive gallium scintigraphy results were clinically rated as valuable, questionable or valueless according to their contribution to the diagnosis.
  • (14) And he talked about the importance of songs: "Songs that we are now being told are valueless, by self-proclaimed revolutionary freedom fighters, posing as Robin Hood.
  • (15) By contaminating the horn, you reduce the reward and the horn becomes a valueless product.
  • (16) Histologic typing is valueless in predicting tumor behavior.
  • (17) Foundation trusts will have an agenda to maximise income, even though that means they will carry out valueless activities in order to do so.
  • (18) For marrows or mild or moderately reduced cellularity the subjective estimate of cellularity was almost valueless both in terms of accuracy and reproducibility.
  • (19) Financial analysts, including Mark Carney the governor of the Bank of England , have warned that a carbon price will render many fossil fuel reserves valueless.
  • (20) Other historical findings are either valueless or should be used to reassure these usually anxious women.

Words possibly related to "valueless"