Synonyms for half:
segmental, part, quarter, fractional, fragmentary, third, semi, sectional.
severed, fissured, Bisected, branching, cut, cleaved, halfway, halve, forked, bifurcated, split, divided, carved.
mean, Bisecting, nuclear, centralized, central, midmost, half-and-half, mediocre, middle-of-the-road, geocentric, middle, medium, mezzo, middling, median, mid, halfway, pivotal, medial, axial, equidistant, core, intermediate, average.
incomplete, partly, Bisected, fractional, divided.
shared, Pieced, measured, Portioned, allotted, fraction, Parceled, budgeted, subdivided, partitioned, rationed, sliced, Dismembered, apportioned, split, segmented, divided, Zoned, cut, compartmented.
sudden death, injury time, extra time, stoppage time, halftime, first half, pregame.
Other synonyms and related words:
moiety, partly, fragmental, stoppage, break, pregame, partially, uncomplete, overtime, halftime, incomplete, one-half, partial, deficient, partway, incompletely, first half, run-in, Anywise, ever.
Sense 4 (noun)
halftime, run-in, pregame, break, extra time, injury time, overtime, first half.
Sense 5 (noun)
dichotomy, fork, bifurcation, hemisphere, cleavage, branch, fissure.
numerator, denominator, third, section, fragment, quarter.
kernel, center, heart, bisection, epicenter, mediocrity, halfway point, nucleus, pivot, hub, midpoint, marrow, axis, midst, nub.
one of two equal parts of a whole (noun)
fraction, hemisphere, moiety, division, bisection.
quantum, segment, dividend, sector, portion, division, compartment, zone, part, lot, stock, stake, percentage, chunk, piece, cut, share, budget, interest, fraction, split, bit, proportion, measure, partition, parcel, helping, commission, member, slice, ration, subdivision, allotment, allowance, quota.