resist
捂 centers on the idea of resisting or pushing back against something, often with the hand.
捂 combines 扌 (hand) with 吾, which likely contributes the sound. The exact historical development is uncertain, but the hand radical suggests an action of resisting or blocking.
The hand 扌 beside 吾 looks like a hand pushing against something solid. Picture your hand resisting a heavy door: 捂 means resist.
For ゴ, imagine your hand resisting a go signal at a race: go -> ゴ, but you hold back.