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infrequently; seldomly considered bad grammar, better: seldom; unfrequent | |||
infrequent; rare | |||
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less frequent; less often; more rare; rarer; scarcer | |||
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rarest | |||
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once in a blue moon; rarely; scarce; seldom |
selten: 91 phrases in 26 subjects |
American usage, not spelling | 1 |
Astronomy | 1 |
Boxing | 1 |
Business | 2 |
Chemistry | 2 |
Communications | 3 |
Earth sciences | 9 |
Economy | 1 |
Environment | 4 |
General | 26 |
Geology | 1 |
Health care | 12 |
Hobbies and pastimes | 1 |
Law | 1 |
Mathematics | 1 |
Medical | 5 |
Microelectronics | 1 |
Microsoft | 2 |
Mining | 3 |
Nuclear physics | 1 |
Optics branch of physics | 1 |
Ornithology | 1 |
Pharmacy and pharmacology | 5 |
Physics | 3 |
Polygraphy | 2 |
Technology | 1 |