Two words
May be 2 words combined (ter+sonum) If not obvious, probably incorrect
son.um N 2 1 ACC S M
sonus, soni N (2nd) M [XXXDX] lesser
noise, sound;
ter ADV POS
ter ADV [XXXDX] lesser
three times; on three occasions;
ter NUM 1 3 X X X ADVERB
tres -es -ia, tertius -a -um, terni -ae -a, ter NUM [XXXAX]
3 times, on 3 occasions - (ADVERB answers 'how often');
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