Following are all the trimonthly like words, in the list below.
THRICE-MONTHLY
100% like trimonthly
TRIWEEKLY
100% like trimonthly
TRIANNUAL
100% like trimonthly
TRIDUANLY
100% like trimonthly
TRIYEARLY
100% like trimonthly
BIMONTHLY
100% like trimonthly
TRIENNIAL
100% like trimonthly
INTRAMONTHLY
100% like trimonthly
TERMLY
100% like trimonthly
TWICE-YEARLY
100% like trimonthly
TRIMESTRAL
100% like trimonthly
TRIDAILY
100% like trimonthly
TWICE-WEEKLY
100% like trimonthly
BIWEEKLY
100% like trimonthly
SEMESTERLY
100% like trimonthly
MONTHLYISH
100% like trimonthly
BIQUARTERLY
100% like trimonthly
FORTNIGHTLY
100% like trimonthly
TRIHOURLY
100% like trimonthly
SESQUIENNIAL
100% like trimonthly
BIYEARLY
100% like trimonthly
INTRAMONTH
100% like trimonthly
HALF-YEARLY
100% like trimonthly
REGULAR
100% like trimonthly
TRIPHASED
100% like trimonthly
CYCLICAL
100% like trimonthly
SEMIHOURLY
100% like trimonthly
SEMIFREQUENT
100% like trimonthly
TERNARY
100% like trimonthly
ISOCHRONOUS
100% like trimonthly
SEMIOCCASIONAL
100% like trimonthly
YEARLY
100% like trimonthly
CONTINUAL
100% like trimonthly
WEEKLYISH
100% like trimonthly
TRI-QUARTER
100% like trimonthly
STAGELY
100% like trimonthly
TRIPARTITE
100% like trimonthly
TRINE
100% like trimonthly
HOMOCHRONOUS
100% like trimonthly
TRICHOTOMOUS
100% like trimonthly
TRIPLE
100% like trimonthly
PAIRWISE
100% like trimonthly
MONOFREQUENT
100% like trimonthly
EPISODIC
100% like trimonthly
EQUIFREQUENT
100% like trimonthly
SEMESTRAL
100% like trimonthly
TERTIPAROUS
100% like trimonthly
MINUTELY
100% like trimonthly
TRIMODAL
100% like trimonthly
BIDIURNAL
100% like trimonthly
TERGEMINOUS
100% like trimonthly
TRISERIAL
100% like trimonthly
OCCURRING
100% like trimonthly
PSEUDOPERIODIC
100% like trimonthly
BACK-TO-BACK-TO-BACK
100% like trimonthly
TRIPLICATE
100% like trimonthly
TRIDIRECTIONAL
100% like trimonthly
QUOTIDIAN
100% like trimonthly
PARASYNCHRONOUS
100% like trimonthly
SIMULTANEOUS
100% like trimonthly
SUCCESSIVE
100% like trimonthly
COINCIDENT
100% like trimonthly
VIGESIMAL
100% like trimonthly
CONCURRENT
100% like trimonthly
THREEFOLD
100% like trimonthly
MIDSENTENCE
100% like trimonthly
OCTAVAL
100% like trimonthly
INTERSPERSED
100% like trimonthly
MULTIRATE
100% like trimonthly
TRIFOLD
100% like trimonthly
ALTERNATE
100% like trimonthly
INTERQUARTER
100% like trimonthly
COINCIDENTAL
100% like trimonthly
TRIMOUNT
100% like trimonthly
TRIADED
100% like trimonthly
STOP-START
100% like trimonthly
TRIPLEXED
100% like trimonthly
INTERCHANGEABLE
100% like trimonthly
ALTERNATING
100% like trimonthly
TRIVERBAL
100% like trimonthly
SYNCHRONICAL
100% like trimonthly
MINUTE-TO-MINUTE
100% like trimonthly
QUARTILED
100% like trimonthly
EVERY SECOND
100% like trimonthly
SPACED OUT
100% like trimonthly
MULTIPHASED
100% like trimonthly
SYNCHRONOUS
100% like trimonthly
THRICE REMOVED
100% like trimonthly
INTERLUDED
100% like trimonthly
RAPID FIRE
100% like trimonthly
STAGEWISE
100% like trimonthly
EVER
100% like trimonthly
BIPUNCTUAL
100% like trimonthly
PHASED
100% like trimonthly
COTERMINOUS
100% like trimonthly
THREE-QUARTER
100% like trimonthly
EQUITEMPORANEOUS
100% like trimonthly
QUADRIPARTITE
100% like trimonthly
SEMPERANNUAL
100% like trimonthly
BACK-TO-BACK
100% like trimonthly