- Three-pointer Noun
- Three-room Adj Noun
- Three-row Adj Noun
- Three-section Adj Noun
- Three-step Adj Noun
- Three-tier Adj Noun
- Three-way Adj Noun Adv
- Three-wheeler Noun Adj
- Three-year-old Adj Noun
- Threeness Noun
- Threepence Noun
- Threeping Noun Pres. Participle
- Threescore Adj Noun Num
- Threesome Noun Adj
- Threevaluedness Noun
- Thremmatology Noun
- Threnody Noun Pnoun
- Threonine Noun Adj
- Threonyl Noun Adj
- Threose Noun Adj
- Threpsology Noun
- Thresh Verb Noun
- Thresher Noun Adj
- Thresherman Noun Adj
- Threshing Noun Pres. Participle
- Threshold Noun Adj
- Threshold-setting Noun Pres. Participle
- Thresholding Noun Pres. Participle
- Thrift Noun Adj
- Thrifter Noun
- Thriftiness Noun
- Thriftlessness Noun
- Thrill Noun Verb Adj
- Thrill-seeker Noun Adj
- Thriller Noun Adj Pnoun
- Thrilling Adj Noun
- Thrips Noun Adj
- Thriver Noun
- Throat Noun Verb Adj
- Throatiness Noun
- Throating Noun Pres. Participle
- Throatwort Noun Adj
- Throb Noun Verb
- Throbber Noun Adj
- Throbbing Noun Adj
- Throe Noun Verb
- Throes Noun
- Thrombectomy Noun Adj
- Thrombin Noun Adj
- Thromboangiitis Noun Adj
- Thrombocyte Noun Adj
- Thrombocytopenia Noun
- Thrombocytopenic Adj Noun
- Thrombocytosis Noun
- Thromboelastometer Noun Adj
- Thromboembolism Noun
- Thrombogen Noun Adj
- Thrombogenesis Noun
- Thrombokinase Noun Adj
- Thrombolymphangitis Noun