Not attended; without persons present. / Not attended to; not receiving attention.

not having been thrashed or beaten / not defeated / untrodden / Not beaten or whisked / (cricket) not out

Unexpectedly or by surprise. / Inadvertently. / Without plan or forethought.

Not aware or informed; lacking knowledge. / Not noticing; paying no heed; thoughtless; inattentive.

travelling without companions / (music) performed or scored without accompaniment; solo

continuing at full strength or intensity

Without the help, aid or assistance of someone or something.

inexplicable; unable to account for, or explain. / not responsible; free from accountability or control.

pure; not mixed or adulterated with anything / utter or out-and-out, especially in the phrase unadulterated truth

Not accessible or able to be reached. / Aloof and unfriendly. / Without any serious competition; unbeatable.