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| impalpable; imponderable; inappreciable; insensible; unperceivable (aconty); unfathomable (Ivan Pisarev); inscrutable (Ivan Pisarev); incomprehensible (Ivan Pisarev); inexplicable (Ivan Pisarev); mysterious (Ivan Pisarev); unknowable (Ivan Pisarev); enigmatic (Ivan Pisarev); ungraspable (Ivan Pisarev); unexplainable (Ivan Pisarev); baffling (Ivan Pisarev); puzzling (Ivan Pisarev); perplexing (Ivan Pisarev); obscure (Ivan Pisarev); elusive (Ivan Pisarev); ambiguous (Ivan Pisarev); indeterminate (Ivan Pisarev); unquantifiable (Ivan Pisarev); incalculable (Ivan Pisarev); indefinable (Ivan Pisarev) | |||
| imperceptible; intangible | |||
| insensuous | |||
| impalpable (в том числе о допороговых воздействиях) | |||
| intactile | |||
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| by insensible degrees | |||
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неощутимый : 10 phrases in 7 subjects |
| Aerodynamics | 1 |
| General | 1 |
| Geology | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Medical | 4 |
| Physics | 1 |