1 adjective persondearfach adj1 c m udóchasach adj1 c m usoirbh adj1 c m ushe's always very optimisticbíonn sí i gcónaí an-dearfachwe're optimistic about the resulttáimid dóchasach faoin toradhthey're optimistic of getting a contracttá siad dóchasach go bhfaighidh siad conradhI'm optimistic we'll make progresstáim dóchasach go ndéanfaimid dul chun cinn2 adjective outlook etcdearfach adj1 c m uit looks optimistictá cuma dhearfach ar chúrsaíthey have an optimistic outlooktá dearcadh dearfach acu3 adjective over-positiveródhóchasach adj1ródhearfach adj1that's a bit optimistic, don't you think?tá sé sin beagán ródhóchasach, nach dóigh leat?