Synonyms to heart of oak

backbone, advocate, alpenstock, arm, athletic supporter, back, backing, bandeau, bearer, bottom, bra, brace, bracer, bracket, brassiere, buttress, cane, carrier, cervix, chutzpah, corset, courage, crook, crutch, determination, firmness, fortitude, foundation garment, fulcrum, gameness, girdle, grit, guts, gutsiness, guttiness, guy, guywire, hardihood, heart, intestinal fortitude, jock, jockstrap, mainstay, maintainer, mast, mettle, mettlesomeness, moxie, neck, nerve, pillar, pith, pluck, pluckiness, prop, purposefulness, rachis, reinforce, reinforcement, reinforcer, resoluteness, resolution, resolve, rest, resting place, rigging, sand, shoulder, shroud, spinal column, spine, spirit, sprit, spunk, spunkiness, stability, staff, stamina, standing rigging, stave, stay, staying power, stick, stiffener, stout heart, strength, strengthener, sturdiness, support, supporter, sustainer, toughness, true grit, upholder, vertebrae, vertebral column, walking stick, will, cement, Tarmac, Tarvia, accouple, accumulate, adamant, adhere, adherent, adhesive, adobe, affix, agglutinate, amass, anchor, annex, articulate, ashlar, asp