freezing up (verb) panic: become, make afraid or distressed
Sinonime: boundless, capricious, chancy, countless, enormous, erratic, fluctuant, iffy, immeasurable, immense, incomputable, inestimable, infinite, innumerable, jillion, no end of, no end to, numberless, uncertain, uncountable, unfixed, unforeseen, unpredictable, unreckonable, untold, vast, whimsical, without number, zillion
Antonime: be calm, be content