gyanjyoti

ubiquitous : to be found everywhere

ulterior : concealed; undisclosed

ultimatum : a last offer or demand; a last word

unassuaged : undiminished

unassuming : unpretentious

unbridled : unrestrained

uncanny : weird, supernatural

undermine : to weaken gradually

undulate : to move like or in waves; to vibrate

unequivocal : clear and emphatic

unfaltering : steady; without stumbling

unfledged : undeveloped or inexperienced

unimpeachable : free from fault

uninhibited : unreserved; unrestricted

unmitigated : unqualified

unobtrusive : modest

unprecedented : of which there has been no previous instance

unruly : turbulent

unsavoury : offensive

unsullied : unpolluted

untenable : not defensible

untoward : unfavourable; inconvenient