What's the difference between infrequent and unfrequent?

Infrequent


Definition:

  • (a.) Seldom happening or occurring; rare; uncommon; unusual.

Example Sentences:

  • (1) Surgical repair of the rheumatologic should however, is performed rarely, and should be reserved for the infrequent cases that do not respond to medical therapy.
  • (2) Despite of the increasing diagnostic importance of the direct determination of the parathormone which is at first available only in special institutions in these cases methodical problems play a less important part than the still not infrequent appearing misunderstanding of the adequate basic disease.
  • (3) Significant side-effects occurred infrequently and only 2 children lost weight during the period of medication.
  • (4) At 7 days axonal swellings were infrequently observed and the main structural feature was a reduction in myelin thickness in affected nerve fibers.
  • (5) In view of its infrequent and vague presentation, care is required to avoid overlooking the diagnosis of abdominal tuberculosis, particularly in the immigrant population.
  • (6) Allelic complementation was not observed, despite testing of a large number of allele pairs, and alleles suppressible by the ochre suppressor SUP11 were absent from a sample of 48 spontaneous mutants and occurred infrequently (7%) among a sample of ultraviolet-induced mutants.
  • (7) Social isolation, characterized by extremely infrequent contacts with other people, affects approximately one out of ten elderly people.
  • (8) This device is a possible improvement in the treatment of infants needing long term venous access, although doctors should be aware of the infrequent complications.
  • (9) This has been infrequently reported to occur during general anesthesia and to cause respiratory embarrassment, representing a significant hazard.
  • (10) Although runaway is infrequent with current generation pacemakers, it should be considered in addition to the more common causes of pacemaker malfunction in the patient with appropriate symptoms.
  • (11) Unequivocal interstitial deposits were infrequent and IgM was present in blood vessels in one patient only.
  • (12) In contrast, control Y79 cells not exposed to medium conditioned by RPE cells exhibit only infrequent neuronal phenotypes.
  • (13) In a series of over 200 patients, raised values were found frequently in hepatobiliary disease and infrequently in bone disease.
  • (14) Further, from the plateau values of the ratios, it follows that the substrates dissociate very infrequently from the ternary complex and that at a low substrate concentration 72% of the reaction follows the pathway in which ATP adds first to the enzyme.
  • (15) We conclude that this neuropathy, which is quite different from the infrequent peripheral nerve syndromes previously described in this illness, is commonly present in late Lyme disease.
  • (16) Biopsy of lymph nodes or brain and serologic tests needed for definitive diagnosis were done infrequently.
  • (17) Hematological side effects of neuroleptic drugs occur infrequently but remain a potential cause of serious toxicity.
  • (18) Four peaks (I, II, III, V) were present in all recordings, and a fifth (IV) was present infrequently.
  • (19) The gonadotrophin response to oestrogen levels was temporarily or permanently disordered in all but 3 patients in this series, whereas an ovarian refractoriness to gonadotrophins was only infrequently observed.
  • (20) Interhemispheric subdural hematoma (ISDH), although not infrequent in children, has been rarely encountered in adults.

Unfrequent


Definition:

  • (a.) Infrequent.
  • (v. t.) To cease to frequent.

Example Sentences:

  • (1) Complications such as obliteration were unfrequent.
  • (2) Analysis of the unfrequent delta-TCS-1+ clones which express surface CD8 molecules revealed that the "heavy" 55 kDa form of (C gamma 2-encoded) gamma chain is selectively expressed by this cell type.
  • (3) In France, RS remains unfrequent although no precise epidemiological data are available.
  • (4) In some patients with parkinsonism, we have found and, often, cured by L-DOPA: 1) An unfrequent symptomatology (oculomotor, sensory, syncinesias, "Babinski" sign), not included in the classic rating scales.
  • (5) Breast localisation of multiple myeloma is quite unfrequent.
  • (6) Compared with some beauty spots, this remains a relatively unfrequented corner of Britain As we cycle down river, the Torridge opens to wide mudflats, pock-marked with the footprints of wading birds.
  • (7) Fathers transmitted HBV unfrequently to their offsprings.
  • (8) Most severe scoliosis and kyphoscoliosis are not unfrequent in European countries.
  • (9) The metastatic tumours of the large intestine are not unfrequent.
  • (10) The radiographic finding with reticulogranular image was unfrequent.
  • (11) This case is compared with 20 previously published observations of PML associated with AIDS and appears rather unusual due to the association of unfrequent clinical peculiarities: previous, probably coincidental, retrobulbar optic neuritis, female patient, lack of risk factor and clinical symptoms of AIDS.
  • (12) Positive cytological examination of sputum are unfrequent.
  • (13) Although its indications are relatively unfrequent, vitrectomy may be justified in certain types of uveitis.
  • (14) The causes of this hypertension are ill-defined, but an autoimmune origin has often been envisaged since primary pulmonary arterial hypertension is not unfrequently associated with connective tissue diseases.
  • (15) Angiograms are not always easily interpreted, and the modern imaging techniques (ultrasound, computed tomography, and above all MRI) can best lead to the preoperative diagnosis, although this lesion is unfrequent.
  • (16) Mason's gastric and gastroplastic techniques is till now unfrequently used.
  • (17) Photograph: Alamy Compared with some beauty spots, this remains a relatively unfrequented corner of Britain.
  • (18) Multicentric gliomas are unfrequently reported in the literature, and very often rise diagnostic problems with other multiple lesions of the Central Nervous System, either of neoplastic nature or not.
  • (19) Scd spermatids were the cells most frequently observed and the spermatogonia the most unfrequently seen.
  • (20) Diagnostic and therapeutical difficulties in emergency situations, especially the not unfrequent late complications and the considerable danger of suicidal actions require in general the immediate hospitalization.

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