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keenly; deeply; fully; heartily; seriously; earnestly
calmly; quietly; softly
fixedly (gazing, staring); intently
久しぶりに故郷の味をしみじみと味わった。
I savored the taste of my hometown deeply.
別れの寂しさをしみじみと感じた。
I keenly felt the loneliness of parting.
定年を迎えてしみじみと長い人生を振り返った。
I deeply reflected on my life.