Frequency adjectives are listed in this post. Each word below can often be found in front of the noun frequency in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing FREQUENCY.
absolute, actual, additional, alarming, angular, annual, appropriate, astonishing, audible, audio, available, average, basic, broad, central, certain, characteristic, common, comparative, complex, considerable, constant, continuous, correct, corresponding, critical, cumulative, current
cutoff, definite, desired, different, discrete, distressing, dominant, doppler, effective, electromagnetic, enough, entire, equal, especial, exact, excessive, expected, extraordinary, extreme, first, fixed, flat, full, fundamental, general, good, great, greater
greatest, harmonic, high, higher, highest, hz, increased, increasing, individual, initial, instantaneous, intermediate, large, larger, laser, less, lesser, light, limited, linear, low, lower, lowest, many, maximum, mean, measured, minimum
moderate, more, most, much, multiple, narrow, natural, negative, new, normal, normalized, nyquist, observed, off, only, operational, optical, optimal, original, orthogonal, other, overall, own, particular, peak, positive, possible, potential
precise, proper, radio, reasonable, reduced, regular, relative, remarkable, reported, required, resonant, respiratory, right, same, second, separate, sheer, signal, significant, similar, simple, single, small, smaller, sound, spatial, special, specific
standard, startling, statistical, such, sufficient, surprising, temporal, tolerable, total, true, typical, undue, unique, unusual, upper, urinary, usual, variable, various, very, vibrational, vibratory, wave, whole, wide, wider
Hope this word list had the adjective used with frequency you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.