If the frequency remains constant and the amplitude is increased, the wavelength will not change. The wavelength of a wave is determined by the speed of the wave and the frequency. The speed of the wave is constant for a given medium, so if the frequency remains constant, the wavelength will also remain constant.
Amplitude refers to the maximum displacement or distance from the equilibrium position of a wave. It represents the intensity or magnitude of the wave. Increasing the amplitude of a wave will only affect the maximum displacement of the particles or the height of the wave, but it will not alter the distance between consecutive crests or troughs, which is the wavelength.