утолстѣ́ (indic,aor,sg,2p/3p)

утолстѣ́ли (partcp,perf,pl|partcp,perf,du,n/f)

утолстѣ́ша (indic,aor,pl,3p)

утолстѣ́ютъ (indic,fut,pl,3p)