unnecessary not needed
necessary absolutely essential
ensure make certain of
unnecessarily without any necessity
ancillary furnishing added support
agnostic a person who claims the existence of God is unknowable
incisor a tooth for cutting or gnawing
incessant uninterrupted in time and indefinitely long continuing
incisura (anatomy) a notch or small hollow
incisure (anatomy) a notch or small hollow
ancestor someone from whom you are descended
accessary someone who helps another person commit a crime
necessarily in such a manner as could not be otherwise
ancestry the lineage of an individual
accessory a supplementary component that improves capability
Insessores a bird with feet adapted for perching
insidious working or spreading in a hidden and usually injurious way
concession the act of yielding
wine cellar storage space where wines are stored
insure protect by a contract of reimbursement in case of loss