"frailer" in the adjective sense
1. frail
physically weak
"an invalid's frail body"
2. fallible, frail, imperfect, weak
wanting in moral strength, courage, or will having the attributes of man as opposed to e.g. divine beings
"I'm only a fallible human"
"frail humanity"
3. delicate, fragile, frail
easily broken or damaged or destroyed
"a kite too delicate to fly safely"
"fragile porcelain plates"
"fragile old bones"
"a frail craft"
Source: WordNet® (An amazing lexical database of English)
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