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adv.
not many times; "in your 1850 church you not infrequently find a dramatic contrast between the sumptuous appointments of the building itself and the inhuman barrack-like living conditions in the church room"
adv.
on certain occasions or in certain cases but not always; "sometimes she wished she were back in England"; "sometimes her photography is breathtaking"; "sometimes they come for a month; at other times for six months"
adv.
to a small degree or extent; "his arguments were somewhat self-contradictory"; "the children argued because one slice of cake was slightly larger than the other"