1.
gradually; slowly spreading
describes something that spreads, permeates, or affects gradually and gently
2.
warmly; with a warm feeling
describes a warm sensation or emotional warmth that spreads through the body or heart
Related Words
Related:
じわじわ (gradually)
Related:
ほんのり (faintly, gently)
Related:
ほかほか (warm and cozy)