"firmer" in the adjective sense
1. firm, steadfast, steady, stiff, unbendable, unfaltering, unshakable, unwavering
marked by firm determination or resolution not shakable
"firm convictions"
"a firm mouth"
"steadfast resolve"
"a man of unbendable perseverence"
"unwavering loyalty"
2. firm, solid
not soft or yielding to pressure
"a firm mattress"
"the snow was firm underfoot"
"solid ground"
3. firm, strong
strong and sure
"a firm grasp"
"gave a strong pull on the rope"
4. firm
not subject to revision or change
"a firm contract"
"a firm offer"
5. firm
of especially a person's physical features) not shaking or trembling
"his voice was firm and confident"
"a firm step"
6. firm, steady, unfluctuating
not liable to fluctuate or especially to fall
"stocks are still firm"
7. firm
securely established
"holds a firm position as the country's leading poet"
8. firm
possessing the tone and resiliency of healthy tissue
"firm muscles"
9. fast, firm, immobile
securely fixed in place
"the post was still firm after being hit by the car"
10. firm, loyal, truehearted, fast
unwavering in devotion to friend or vow or cause
"a firm ally"
"loyal supporters"
"the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison
"fast friends"
Source: WordNet® (An amazing lexical database of English)
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