I . a.
1.
Narrow, close, contracted, constricted, constrained, confined.
2.
Strict, rigorous, rigid, severe.
3.
Difficult, distressful, ~ened, grievous.
II . a.
1.
Narrow pass ( especially between two seas ), gut, narrows.
2.
Distress, difficulty, perplexity, dilemma, embarrassment, pinch, exigency, emergency, critical situation, distressing necessity, pass.