模索
もさく · mosaku · JLPT N1 · noun
groping (for)
🔦 模 (feel for) + 索 (cord, rope): groping along a rope in the dark
模索 = 模 (trace, feel one's way) + 索 (rope, cable). Like feeling along a rope when you cannot see, you grope for an answer by touch rather than sight.