1. Going directly ahead from one point to another without veering or turning aside
   "a straight and narrow tree-lined road unswerving across the lowlands"
   - undeviating 
2. Firm and dependable especially in loyalty
   "unswerving devotion"; "unswerving allegiance"
   - steadfast, staunch

See also: constant, direct, unswervingly

• therapy
• Theravada
• Theravada Buddhism
• there
• there's
• thereabout
• thereabouts
• thereafter
• thereat
• thereby
• therefor
• therefore
• therefrom
• therein
• thereinafter
• thereinto
• theremin
• thereminvox
• thereness
• thereof
• thereon
• Theresa
• thereto
• theretofore
• thereunder