(r)ahead, in front, beforeat or in the front“I see the lights of a town ahead”, “the road ahead is foggy”, “staring straight ahead”, “we couldn't see over the heads of the people in front”, “with the cross of Jesus marching on before”
(r)ahead, onward, onwards, forward, forwards, forraderin a forward direction“go ahead”, “the train moved ahead slowly”, “the boat lurched ahead”, “moved onward into the forest”, “they went slowly forward in the mud”
(r)ahead, in advance, beforehandahead of time; in anticipation“when you pay ahead (or in advance) you receive a discount”, “We like to plan ahead”, “should have made reservations beforehand”
(r)aheadto a different or a more advanced time (meaning advanced either toward the present or toward the future)“moved the appointment ahead from Tuesday to Monday”, “pushed the deadline ahead from Tuesday to Wednesday”
(r)ahead, out front, in the leadleading or ahead in a competition“the horse was three lengths ahead going into the home stretch”, “ahead by two pawns”, “our candidate is in the lead in the polls”, “way out front in the race”, “the advertising campaign put them out front in sales”