| BENUMBINGLY | • benumbingly adv. In a benumbing manner. • BENUMBING adv. BENUMB, to make numb. | 
| DUMBFOUNDINGLY | • dumbfoundingly adv. In a dumbfounding manner. | 
| ENCUMBERINGLY | • encumberingly adv. In an encumbering manner. • ENCUMBERING adv. ENCUMBER, to impede the motion of, also INCUMBER. | 
| INCOMMENSURABLY | • incommensurably adv. In an incommensurable manner; immeasurably. • INCOMMENSURABLE adv. not commensurable, lacking a basis of comparison in respect to a quality normally subject to comparison. | 
| INCOMMUNICABLY | • incommunicably adv. In an incommunicable manner or fashion. • INCOMMUNICABLE adv. not communicable. | 
| INCONSUMABLY | • inconsumably adv. Such that it cannot be consumed or used up; inexhaustibly. • INCONSUMABLE adv. not capable of being consumed. | 
| INCUMBENTLY | • incumbently adv. In an incumbent manner; so as to be incumbent. • INCUMBENT adv. imposed on. | 
| INCUMBERINGLY | • incumberingly adv. In an incumbering manner. • INCUMBERING adv. INCUMBER, to impede the motion of, also ENCUMBER. | 
| INNUMERABILITY | • innumerability n. The state of being innumerable. • INNUMERABILITY n. the quality of being innumerable. | 
| INNUMERABLY | • innumerably adv. To an innumerable extent; uncountably. • INNUMERABLE adv. that cannot be counted, also INNUMEROUS. | 
| INSURMOUNTABLY | • insurmountably adv. In an insurmountable manner. • insurmountably adv. To an insurmountable extent. • INSURMOUNTABLE adv. incapable of being surmounted. | 
| NUMBINGLY | • numbingly adv. In a way or to an extent that numbs. • NUMBING adv. NUMB, to deprive of feeling. | 
| UNAMBIVALENTLY | • unambivalently adv. In an unambivalent manner. • UNAMBIVALENT adv. not ambivalent. | 
| UNBECOMINGLY | • unbecomingly adv. In an unbecoming manner. • UNBECOMING adv. not becoming. | 
| UNBESEEMINGLY | • unbeseemingly adv. (Archaic) In an unbeseeming manner. • UNBESEEMING adv. UNBESEEM, to misbecome. | 
| UNDETERMINABLY | Sorry, definition not available. | 
| UNIMAGINABLY | • unimaginably adv. To an extent or in a way that cannot be, or could not have been, imagined. • UNIMAGINABLE adv. not imaginable or comprehensible. | 
| UNMANAGEABILITY | • unmanageability n. Unmanageableness. | 
| UNMENTIONABLY | • unmentionably adv. In an unmentionable way; indescribably, unutterably, unspeakably. • UNMENTIONABLE adv. that cannot be mentioned. | 
| UNTREMBLINGLY | • untremblingly adv. Without trembling; courageously. • UNTREMBLING adv. not trembling. |